WO200222234-A2 -- EP398847-A   MARIANI F (MARI-Individual)   MARIANI F;  EP398847-A3   MARIANI F (MARI-Individual)   MARIANI F;  JP09308813-A   ;  JP54087677-A   ;  WO1997048144-A1   ;  US6432177-B1 -- US3847672-A   UNITED AIRCRAFT CORP (UNAC);  US4737173-A   AMWAY CORP (AMWA-Non-standard)   KUDIRKA P J,  HAMILTON R W,  GROCHOSKI G T;  US5013617-A   INT FUEL CELLS CORP (ITFU)   SCHEFFLER G W;  US5156925-A   ALCAN INT LTD (ALCN)   LAPP S P;  US5221586-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI);  TOKYO GAS CO LTD (TOLG);  OSAKA GAS CO LTD (OSAG);  TOHO GAS KK (TOHG)   MORIMOTO H,  HATO,  HATORI S,  KOBAYASHI K,  UEMATSU H,  HIKITA T,  SHINOZAKI K,  NAKAGAWA S;  US5372617-A   CHARLES STARK DRAPER LAB INC (DRAS)   KERREBROCK P A,  WAYNE A S;  US5626820-A   KINKEAD D A (KINK-Individual);  REZUKE R W (REZU-Individual);  HIGLEY J K (HIGL-Individual)   REZUKE R W,  KINKEAD D A,  HIGLEY J K;  US5837393-A   HONDA GIKEN KOGYO KK (HOND)   OKAMOTO T;  US5944878-A   LINDHE KONSULT & FOERVALTNINGS AB CURT (LIND-Non-standard)   LINDHE C;  US6013385-A   EMPRISE CORP (EMPR-Non-standard)   DUBOSE R A;  US6057051-A   MATSUSHITA ELECTRIC IND CO LTD (MATU)   UCHIDA M,  FUKUOKA Y,  SUGAWARA Y,  EDA N;  US6074769-A   BINSMAIER H (BINS-Individual)   JOHNSSEN W G;  US6309769-B1   PLUG POWER INC (PLUG-Non-standard)   HAUG A T;  US6638339-B2 -- EP398847-A   MARIANI F (MARI-Individual)   MARIANI F;  EP677417-A1   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  GB2250130-A   VICKERS SHIPBUILDING & ENG (VICS);  CJBD LTD (CJBD-Non-standard)   PALMER I,  SEYMOUR C M,  DAMS R A J;  JP09308813-A   ;  JP54087677-A   ;  US3847672-A   UNITED AIRCRAFT CORP (UNAC);  US4080791-A   EXXON RES & ENG CO (ESSO)   NADLER M,  CAHN R P;  US4483694-A   TOKYO SHIBAURA DENKI KK (TOKE)   TAKAMURA T,  IMAI A,  SUZUKI N;  US4595642-A   MITSUBISHI HEAVY IND CO LTD (MITO)   NAKANISHI K,  TANABE S,  IZUMI J;  US4737173-A   AMWAY CORP (AMWA-Non-standard)   KUDIRKA P J,  HAMILTON R W,  GROCHOSKI G T;  US5013617-A   INT FUEL CELLS CORP (ITFU)   SCHEFFLER G W;  US5156925-A   ALCAN INT LTD (ALCN)   LAPP S P;  US5189092-A   KOSLOW TECHN CORP (KOSL-Non-standard)   KOSLOW E E;  US5221586-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI);  TOKYO GAS CO LTD (TOLG);  OSAKA GAS CO LTD (OSAG);  TOHO GAS KK (TOHG)   MORIMOTO H,  HATO,  HATORI S,  KOBAYASHI K,  UEMATSU H,  HIKITA T,  SHINOZAKI K,  NAKAGAWA S;  US5331037-A   KOSLOW TECHN CORP (KOSL-Non-standard)   KOSLOW E E;  US5372617-A   CHARLES STARK DRAPER LAB INC (DRAS)   KERREBROCK P A,  WAYNE A S;  US5376609-A   CORNING INC (CORG)   GUILE D L;  US5626820-A   KINKEAD D A (KINK-Individual);  REZUKE R W (REZU-Individual);  HIGLEY J K (HIGL-Individual)   REZUKE R W,  KINKEAD D A,  HIGLEY J K;  US5641031-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US5646852-A   DAIMLER-BENZ AG (DAIM)   LORENZ H,  NOREIKAT K,  KLAIBER T,  FLECK W,  SONNTAG J,  HORNBURG G,  GAULHOFER A;  US5662184-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US5794732-A   DAIMLER-BENZ AG (DAIM)   LORENZ H,  NOREIKAT K,  KLAIBER T,  FLECK W,  SONNTAG J,  HORNBURG G,  GAULHOFER A;  US5837393-A   HONDA GIKEN KOGYO KK (HOND)   OKAMOTO T;  US5928414-A   GORE & ASSOC INC W L (GORE)   WNENCHAK R M,  BACINO J E,  STARK S K,  WILDT E H;  US5944878-A   LINDHE KONSULT & FOERVALTNINGS AB CURT (LIND-Non-standard)   LINDHE C;  US5981096-A   DAIMLER-BENZ AG (DAIM)   LAMM A,  URBAN P,  HORNBURG G;  US6007930-A   FORD GLOBAL TECHNOLOGIES INC (FORD)   ADAMS J A,  SULEK M S,  SALOKA G S;  US6013385-A   EMPRISE CORP (EMPR-Non-standard)   DUBOSE R A;  US6057051-A   MATSUSHITA ELECTRIC IND CO LTD (MATU)   UCHIDA M,  FUKUOKA Y,  SUGAWARA Y,  EDA N;  US6074769-A   BINSMAIER H (BINS-Individual)   JOHNSSEN W G;  US6124052-A   TOYODA JIDOSHOKKI SEISAKUSHO KK (TOYX)   KATOH H,  KUBO H,  FUJII T;  US6152996-A   AIR-MAZE CORP (AIRM-Non-standard)   LINNERSTEN S B,  FLEMMING R J;  US6190432-B1   DONALDSON CO INC (DOND)   GIESEKE S S,  FINNERTY C J;  US6284397-B1   BALLARD POWER SYSTEMS INC (BLRD)   BARTON R H;  US6296957-B1   DBB FUEL CELL ENGINES GMBH (DBBF-Non-standard)   GRAAGE K;  US6309769-B1   PLUG POWER INC (PLUG-Non-standard)   HAUG A T;  US6316134-B1   BALLARD GENERATION SYSTEMS INC (BALL-Non-standard)   COWNDEN R,  EICHE M,  LOUIE C R,  WATKINS D S;  US6432177-B1   DONALDSON CO INC (DOND)   DALLAS A J,  GOGINS M A,  GRAHAM K M,  ADAMEK D E,  SKUSTER R;  WO1997048144-A1   ;  WO2001048850-A1   ;  US2005022670-A1 -- US3217715-A   ;  US3847672-A   UNITED AIRCRAFT CORP (UNAC);  US4080791-A   EXXON RES & ENG CO (ESSO)   NADLER M,  CAHN R P;  US4483694-A   TOKYO SHIBAURA DENKI KK (TOKE)   TAKAMURA T,  IMAI A,  SUZUKI N;  US4595642-A   MITSUBISHI HEAVY IND CO LTD (MITO)   NAKANISHI K,  TANABE S,  IZUMI J;  US4737173-A   AMWAY CORP (AMWA-Non-standard)   KUDIRKA P J,  HAMILTON R W,  GROCHOSKI G T;  US5013617-A   INT FUEL CELLS CORP (ITFU)   SCHEFFLER G W;  US5156925-A   ALCAN INT LTD (ALCN)   LAPP S P;  US5189092-A   KOSLOW TECHN CORP (KOSL-Non-standard)   KOSLOW E E;  US5221586-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI);  TOKYO GAS CO LTD (TOLG);  OSAKA GAS CO LTD (OSAG);  TOHO GAS KK (TOHG)   MORIMOTO H,  HATO,  HATORI S,  KOBAYASHI K,  UEMATSU H,  HIKITA T,  SHINOZAKI K,  NAKAGAWA S;  US5331037-A   KOSLOW TECHN CORP (KOSL-Non-standard)   KOSLOW E E;  US5372617-A   CHARLES STARK DRAPER LAB INC (DRAS)   KERREBROCK P A,  WAYNE A S;  US5376609-A   CORNING INC (CORG)   GUILE D L;  US5595949-A   EFL ELECTRIC FUEL LTD (EFLE-Non-standard)   GOLDSTEIN J,  HARATS Y,  SHARON Y,  NAIMER N;  US5626820-A   KINKEAD D A (KINK-Individual);  REZUKE R W (REZU-Individual);  HIGLEY J K (HIGL-Individual)   REZUKE R W,  KINKEAD D A,  HIGLEY J K;  US5641031-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US5646852-A   DAIMLER-BENZ AG (DAIM)   LORENZ H,  NOREIKAT K,  KLAIBER T,  FLECK W,  SONNTAG J,  HORNBURG G,  GAULHOFER A;  US5662184-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US5772738-A   PUREX CO LTD (PURX);  TOSHIBA KK (TOKE)   MURAOKA H;  US5794732-A   DAIMLER-BENZ AG (DAIM)   LORENZ H,  NOREIKAT K,  KLAIBER T,  FLECK W,  SONNTAG J,  HORNBURG G,  GAULHOFER A;  US5837393-A   HONDA GIKEN KOGYO KK (HOND)   OKAMOTO T;  US5925322-A   H-POWER CORP (HPOW-Non-standard)   WERTH J;  US5928414-A   GORE & ASSOC INC W L (GORE)   WNENCHAK R M,  BACINO J E,  STARK S K,  WILDT E H;  US5944878-A   LINDHE KONSULT & FOERVALTNINGS AB CURT (LIND-Non-standard)   LINDHE C;  US5981096-A   DAIMLER-BENZ AG (DAIM)   LAMM A,  URBAN P,  HORNBURG G;  US6007930-A   FORD GLOBAL TECHNOLOGIES INC (FORD)   ADAMS J A,  SULEK M S,  SALOKA G S;  US6013385-A   EMPRISE CORP (EMPR-Non-standard)   DUBOSE R A;  US6057051-A   MATSUSHITA ELECTRIC IND CO LTD (MATU)   UCHIDA M,  FUKUOKA Y,  SUGAWARA Y,  EDA N;  US6074769-A   BINSMAIER H (BINS-Individual)   JOHNSSEN W G;  US6124052-A   TOYODA JIDOSHOKKI SEISAKUSHO KK (TOYX)   KATOH H,  KUBO H,  FUJII T;  US6152996-A   AIR-MAZE CORP (AIRM-Non-standard)   LINNERSTEN S B,  FLEMMING R J;  US6190432-B1   DONALDSON CO INC (DOND)   GIESEKE S S,  FINNERTY C J;  US6284397-B1   BALLARD POWER SYSTEMS INC (BLRD)   BARTON R H;  US6296957-B1   DBB FUEL CELL ENGINES GMBH (DBBF-Non-standard)   GRAAGE K;  US6309769-B1   PLUG POWER INC (PLUG-Non-standard)   HAUG A T;  US6316134-B1   BALLARD GENERATION SYSTEMS INC (BALL-Non-standard)   COWNDEN R,  EICHE M,  LOUIE C R,  WATKINS D S;  US6432177-B1   DONALDSON CO INC (DOND)   DALLAS A J,  GOGINS M A,  GRAHAM K M,  ADAMEK D E,  SKUSTER R;  US7101419-B2 -- EP398847-A   MARIANI F (MARI-Individual)   MARIANI F;  EP677417-A1   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  GB2250130-A   VICKERS SHIPBUILDING & ENG (VICS);  CJBD LTD (CJBD-Non-standard)   PALMER I,  SEYMOUR C M,  DAMS R A J;  JP07094200-A   ;  JP09308813-A   ;  JP54087677-A   ;  JP60054177-A   ;  US3217715-A   ;  US3847672-A   UNITED AIRCRAFT CORP (UNAC);  US4080791-A   EXXON RES & ENG CO (ESSO)   NADLER M,  CAHN R P;  US4483694-A   TOKYO SHIBAURA DENKI KK (TOKE)   TAKAMURA T,  IMAI A,  SUZUKI N;  US4595642-A   MITSUBISHI HEAVY IND CO LTD (MITO)   NAKANISHI K,  TANABE S,  IZUMI J;  US4737173-A   AMWAY CORP (AMWA-Non-standard)   KUDIRKA P J,  HAMILTON R W,  GROCHOSKI G T;  US5013617-A   INT FUEL CELLS CORP (ITFU)   SCHEFFLER G W;  US5156925-A   ALCAN INT LTD (ALCN)   LAPP S P;  US5189092-A   KOSLOW TECHN CORP (KOSL-Non-standard)   KOSLOW E E;  US5221586-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI);  TOKYO GAS CO LTD (TOLG);  OSAKA GAS CO LTD (OSAG);  TOHO GAS KK (TOHG)   MORIMOTO H,  HATO,  HATORI S,  KOBAYASHI K,  UEMATSU H,  HIKITA T,  SHINOZAKI K,  NAKAGAWA S;  US5331037-A   KOSLOW TECHN CORP (KOSL-Non-standard)   KOSLOW E E;  US5372617-A   CHARLES STARK DRAPER LAB INC (DRAS)   KERREBROCK P A,  WAYNE A S;  US5376609-A   CORNING INC (CORG)   GUILE D L;  US5595949-A   EFL ELECTRIC FUEL LTD (EFLE-Non-standard)   GOLDSTEIN J,  HARATS Y,  SHARON Y,  NAIMER N;  US5626820-A   KINKEAD D A (KINK-Individual);  REZUKE R W (REZU-Individual);  HIGLEY J K (HIGL-Individual)   REZUKE R W,  KINKEAD D A,  HIGLEY J K;  US5641031-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US5646852-A   DAIMLER-BENZ AG (DAIM)   LORENZ H,  NOREIKAT K,  KLAIBER T,  FLECK W,  SONNTAG J,  HORNBURG G,  GAULHOFER A;  US5662184-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US5772738-A   PUREX CO LTD (PURX);  TOSHIBA KK (TOKE)   MURAOKA H;  US5794732-A   DAIMLER-BENZ AG (DAIM)   LORENZ H,  NOREIKAT K,  KLAIBER T,  FLECK W,  SONNTAG J,  HORNBURG G,  GAULHOFER A;  US5837393-A   HONDA GIKEN KOGYO KK (HOND)   OKAMOTO T;  US5925322-A   H-POWER CORP (HPOW-Non-standard)   WERTH J;  US5928414-A   GORE & ASSOC INC W L (GORE)   WNENCHAK R M,  BACINO J E,  STARK S K,  WILDT E H;  US5944878-A   LINDHE KONSULT & FOERVALTNINGS AB CURT (LIND-Non-standard)   LINDHE C;  US5981096-A   DAIMLER-BENZ AG (DAIM)   LAMM A,  URBAN P,  HORNBURG G;  US6007930-A   FORD GLOBAL TECHNOLOGIES INC (FORD)   ADAMS J A,  SULEK M S,  SALOKA G S;  US6013385-A   EMPRISE CORP (EMPR-Non-standard)   DUBOSE R A;  US6057051-A   MATSUSHITA ELECTRIC IND CO LTD (MATU)   UCHIDA M,  FUKUOKA Y,  SUGAWARA Y,  EDA N;  US6074769-A   BINSMAIER H (BINS-Individual)   JOHNSSEN W G;  US6124052-A   TOYODA JIDOSHOKKI SEISAKUSHO KK (TOYX)   KATOH H,  KUBO H,  FUJII T;  US6152996-A   AIR-MAZE CORP (AIRM-Non-standard)   LINNERSTEN S B,  FLEMMING R J;  US20020150805-A1   ;  US6190432-B1   DONALDSON CO INC (DOND)   GIESEKE S S,  FINNERTY C J;  US6284397-B1   BALLARD POWER SYSTEMS INC (BLRD)   BARTON R H;  US6296957-B1   DBB FUEL CELL ENGINES GMBH (DBBF-Non-standard)   GRAAGE K;  US6309769-B1   PLUG POWER INC (PLUG-Non-standard)   HAUG A T;  US6316134-B1   BALLARD GENERATION SYSTEMS INC (BALL-Non-standard)   COWNDEN R,  EICHE M,  LOUIE C R,  WATKINS D S;  US6432177-B1   DONALDSON CO INC (DOND)   DALLAS A J,  GOGINS M A,  GRAHAM K M,  ADAMEK D E,  SKUSTER R;  WO1997048144-A1   ;  WO2001048850-A1   ;  US2007003800-A1 -- US3847672-A   UNITED AIRCRAFT CORP (UNAC);  US4032457-A   FIBREDYNE INC (FIBR-Non-standard)   MATCHETT R W;  US4080791-A   EXXON RES & ENG CO (ESSO)   NADLER M,  CAHN R P;  US4483694-A   TOKYO SHIBAURA DENKI KK (TOKE)   TAKAMURA T,  IMAI A,  SUZUKI N;  US4595642-A   MITSUBISHI HEAVY IND CO LTD (MITO)   NAKANISHI K,  TANABE S,  IZUMI J;  US4737173-A   AMWAY CORP (AMWA-Non-standard)   KUDIRKA P J,  HAMILTON R W,  GROCHOSKI G T;  US5013617-A   INT FUEL CELLS CORP (ITFU)   SCHEFFLER G W;  US5156925-A   ALCAN INT LTD (ALCN)   LAPP S P;  US5189092-A   KOSLOW TECHN CORP (KOSL-Non-standard)   KOSLOW E E;  US5221586-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI);  TOKYO GAS CO LTD (TOLG);  OSAKA GAS CO LTD (OSAG);  TOHO GAS KK (TOHG)   MORIMOTO H,  HATO,  HATORI S,  KOBAYASHI K,  UEMATSU H,  HIKITA T,  SHINOZAKI K,  NAKAGAWA S;  US5288469-A   ENVIROSURGICAL INC (ENVI-Non-standard)   SKALLA R M;  US5331037-A   KOSLOW TECHN CORP (KOSL-Non-standard)   KOSLOW E E;  US5372617-A   CHARLES STARK DRAPER LAB INC (DRAS)   KERREBROCK P A,  WAYNE A S;  US5376609-A   CORNING INC (CORG)   GUILE D L;  US5626820-A   KINKEAD D A (KINK-Individual);  REZUKE R W (REZU-Individual);  HIGLEY J K (HIGL-Individual)   REZUKE R W,  KINKEAD D A,  HIGLEY J K;  US5641031-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US5646852-A   DAIMLER-BENZ AG (DAIM)   LORENZ H,  NOREIKAT K,  KLAIBER T,  FLECK W,  SONNTAG J,  HORNBURG G,  GAULHOFER A;  US5662184-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US5794732-A   DAIMLER-BENZ AG (DAIM)   LORENZ H,  NOREIKAT K,  KLAIBER T,  FLECK W,  SONNTAG J,  HORNBURG G,  GAULHOFER A;  US5837393-A   HONDA GIKEN KOGYO KK (HOND)   OKAMOTO T;  US5928414-A   GORE & ASSOC INC W L (GORE)   WNENCHAK R M,  BACINO J E,  STARK S K,  WILDT E H;  US5944878-A   LINDHE KONSULT & FOERVALTNINGS AB CURT (LIND-Non-standard)   LINDHE C;  US5981096-A   DAIMLER-BENZ AG (DAIM)   LAMM A,  URBAN P,  HORNBURG G;  US6007930-A   FORD GLOBAL TECHNOLOGIES INC (FORD)   ADAMS J A,  SULEK M S,  SALOKA G S;  US6013385-A   EMPRISE CORP (EMPR-Non-standard)   DUBOSE R A;  US6057051-A   MATSUSHITA ELECTRIC IND CO LTD (MATU)   UCHIDA M,  FUKUOKA Y,  SUGAWARA Y,  EDA N;  US6074769-A   BINSMAIER H (BINS-Individual)   JOHNSSEN W G;  US6083637-A   DBB FUEL CELL ENGINES GMBH (DBBF-Non-standard)   WALZ H F,  ZUR MEGEDE D;  US6103415-A   AISIN SEIKI KK (AISE)   KURITA K,  KAJIO K;  US6110611-A   SIEMENS AG (SIEI)   STUEHLER W,  STENGER H,  KEIM M;  US6117579-A   MATSUSHITA ELECTRIC IND CO LTD (MATU)   GYOTEN H,  GAMOU T,  HATOH K,  YASUMOTO E;  US6124052-A   TOYODA JIDOSHOKKI SEISAKUSHO KK (TOYX)   KATOH H,  KUBO H,  FUJII T;  US6152996-A   AIR-MAZE CORP (AIRM-Non-standard)   LINNERSTEN S B,  FLEMMING R J;  US6190432-B1   DONALDSON CO INC (DOND)   GIESEKE S S,  FINNERTY C J;  US6284397-B1   BALLARD POWER SYSTEMS INC (BLRD)   BARTON R H;  US6296957-B1   DBB FUEL CELL ENGINES GMBH (DBBF-Non-standard)   GRAAGE K;  US6309769-B1   PLUG POWER INC (PLUG-Non-standard)   HAUG A T;  US6316134-B1   BALLARD GENERATION SYSTEMS INC (BALL-Non-standard)   COWNDEN R,  EICHE M,  LOUIE C R,  WATKINS D S;  US6432177-B1   DONALDSON CO INC (DOND)   DALLAS A J,  GOGINS M A,  GRAHAM K M,  ADAMEK D E,  SKUSTER R;  US6601736-B2   OPHARDT H (OPHA-Individual);  MIRBACH A (MIRB-Individual)   OPHARDT H,  MIRBACH A;  US6638339-B2   DONALDSON CO INC (DOND)   DALLAS A J,  GOGINS M A,  GRAHAM K M,  ADAMEK D E,  SKUSTER R;  US6780534-B2   DONALDSON CO INC (DOND)   STENERSEN E,  NYMAN W M,  CANEPA R T;  US6783881-B2   DONALDSON CO INC (DOND)   STENERSEN E,  NYMAN W M,  CANEPA R T;  US6797027-B2   DONALDSON CO INC (DOND)   STENERSEN E,  NYMAN W M,  CANEPA R T;  US7101419-B2   DONALDSON CO INC (DOND)   DALLAS A J,  GOGINS M A,  GRAHAM K M,  ADAMEK D E,  SKUSTER R;  US7122258-B2   PLUG POWER INC (PLUG-Non-standard)   TRAVER R S;  EP1349638-B1 -- EP398847-A   MARIANI F (MARI-Individual)   MARIANI F;  WO1997048144-A1   ;  US7758674-B2 -- EP398847-A   MARIANI F (MARI-Individual)   MARIANI F;  EP677417-A1   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  GB2250130-A   VICKERS SHIPBUILDING & ENG (VICS);  CJBD LTD (CJBD-Non-standard)   PALMER I,  SEYMOUR C M,  DAMS R A J;  JP07094200-A   ;  JP09308813-A   ;  JP54087677-A   ;  JP60054177-A   ;  US3217715-A   ;  US3847672-A   UNITED AIRCRAFT CORP (UNAC);  US4032457-A   FIBREDYNE INC (FIBR-Non-standard)   MATCHETT R W;  US4080791-A   EXXON RES & ENG CO (ESSO)   NADLER M,  CAHN R P;  US4483694-A   TOKYO SHIBAURA DENKI KK (TOKE)   TAKAMURA T,  IMAI A,  SUZUKI N;  US4595642-A   MITSUBISHI HEAVY IND CO LTD (MITO)   NAKANISHI K,  TANABE S,  IZUMI J;  US4737173-A   AMWAY CORP (AMWA-Non-standard)   KUDIRKA P J,  HAMILTON R W,  GROCHOSKI G T;  US5013617-A   INT FUEL CELLS CORP (ITFU)   SCHEFFLER G W;  US5156925-A   ALCAN INT LTD (ALCN)   LAPP S P;  US5189092-A   KOSLOW TECHN CORP (KOSL-Non-standard)   KOSLOW E E;  US5221586-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI);  TOKYO GAS CO LTD (TOLG);  OSAKA GAS CO LTD (OSAG);  TOHO GAS KK (TOHG)   MORIMOTO H,  HATO,  HATORI S,  KOBAYASHI K,  UEMATSU H,  HIKITA T,  SHINOZAKI K,  NAKAGAWA S;  US5288469-A   ENVIROSURGICAL INC (ENVI-Non-standard)   SKALLA R M;  US5331037-A   KOSLOW TECHN CORP (KOSL-Non-standard)   KOSLOW E E;  US5372617-A   CHARLES STARK DRAPER LAB INC (DRAS)   KERREBROCK P A,  WAYNE A S;  US5376609-A   CORNING INC (CORG)   GUILE D L;  US5595949-A   EFL ELECTRIC FUEL LTD (EFLE-Non-standard)   GOLDSTEIN J,  HARATS Y,  SHARON Y,  NAIMER N;  US5626820-A   KINKEAD D A (KINK-Individual);  REZUKE R W (REZU-Individual);  HIGLEY J K (HIGL-Individual)   REZUKE R W,  KINKEAD D A,  HIGLEY J K;  US5641031-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US5646852-A   DAIMLER-BENZ AG (DAIM)   LORENZ H,  NOREIKAT K,  KLAIBER T,  FLECK W,  SONNTAG J,  HORNBURG G,  GAULHOFER A;  US5662184-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US5772738-A   PUREX CO LTD (PURX);  TOSHIBA KK (TOKE)   MURAOKA H;  US5794732-A   DAIMLER-BENZ AG (DAIM)   LORENZ H,  NOREIKAT K,  KLAIBER T,  FLECK W,  SONNTAG J,  HORNBURG G,  GAULHOFER A;  US5837393-A   HONDA GIKEN KOGYO KK (HOND)   OKAMOTO T;  US5925322-A   H-POWER CORP (HPOW-Non-standard)   WERTH J;  US5928414-A   GORE & ASSOC INC W L (GORE)   WNENCHAK R M,  BACINO J E,  STARK S K,  WILDT E H;  US5944878-A   LINDHE KONSULT & FOERVALTNINGS AB CURT (LIND-Non-standard)   LINDHE C;  US5981096-A   DAIMLER-BENZ AG (DAIM)   LAMM A,  URBAN P,  HORNBURG G;  US6007930-A   FORD GLOBAL TECHNOLOGIES INC (FORD)   ADAMS J A,  SULEK M S,  SALOKA G S;  US6013385-A   EMPRISE CORP (EMPR-Non-standard)   DUBOSE R A;  US6057051-A   MATSUSHITA ELECTRIC IND CO LTD (MATU)   UCHIDA M,  FUKUOKA Y,  SUGAWARA Y,  EDA N;  US6074769-A   BINSMAIER H (BINS-Individual)   JOHNSSEN W G;  US6083637-A   DBB FUEL CELL ENGINES GMBH (DBBF-Non-standard)   WALZ H F,  ZUR MEGEDE D;  US6103415-A   AISIN SEIKI KK (AISE)   KURITA K,  KAJIO K;  US6110611-A   SIEMENS AG (SIEI)   STUEHLER W,  STENGER H,  KEIM M;  US6117579-A   MATSUSHITA ELECTRIC IND CO LTD (MATU)   GYOTEN H,  GAMOU T,  HATOH K,  YASUMOTO E;  US6124052-A   TOYODA JIDOSHOKKI SEISAKUSHO KK (TOYX)   KATOH H,  KUBO H,  FUJII T;  US6152996-A   AIR-MAZE CORP (AIRM-Non-standard)   LINNERSTEN S B,  FLEMMING R J;  US20020150805-A1   ;  US6190432-B1   DONALDSON CO INC (DOND)   GIESEKE S S,  FINNERTY C J;  US6284397-B1   BALLARD POWER SYSTEMS INC (BLRD)   BARTON R H;  US6296957-B1   DBB FUEL CELL ENGINES GMBH (DBBF-Non-standard)   GRAAGE K;  US6309769-B1   PLUG POWER INC (PLUG-Non-standard)   HAUG A T;  US6316134-B1   BALLARD GENERATION SYSTEMS INC (BALL-Non-standard)   COWNDEN R,  EICHE M,  LOUIE C R,  WATKINS D S;  US6432177-B1   DONALDSON CO INC (DOND)   DALLAS A J,  GOGINS M A,  GRAHAM K M,  ADAMEK D E,  SKUSTER R;  US6601736-B2   OPHARDT H (OPHA-Individual);  MIRBACH A (MIRB-Individual)   OPHARDT H,  MIRBACH A;  US6638339-B2   DONALDSON CO INC (DOND)   DALLAS A J,  GOGINS M A,  GRAHAM K M,  ADAMEK D E,  SKUSTER R;  US6780534-B2   DONALDSON CO INC (DOND)   STENERSEN E,  NYMAN W M,  CANEPA R T;  US6783881-B2   DONALDSON CO INC (DOND)   STENERSEN E,  NYMAN W M,  CANEPA R T;  US6797027-B2   DONALDSON CO INC (DOND)   STENERSEN E,  NYMAN W M,  CANEPA R T;  US7101419-B2   DONALDSON CO INC (DOND)   DALLAS A J,  GOGINS M A,  GRAHAM K M,  ADAMEK D E,  SKUSTER R;  US7122258-B2   PLUG POWER INC (PLUG-Non-standard)   TRAVER R S;  WO1997048144-A1   ;  WO2001048850-A1