US2005235615-A1 -- US49036-A   ;  US3812370-A   ENVIRONMENT/ONE CORP (ENVI-Non-standard);  US3847672-A   UNITED AIRCRAFT CORP (UNAC);  US3861894-A   BIO-DYNAMICS INC (BIOD-Non-standard);  US3925043-A   ENVIRONMENT/ONE (ENVI-Non-standard)   MATRONE J L,  LYONS W E;  US3944403-A   SIEBE GORMAN & CO LTD (SIEB);  UK SEC FOR DEFENCE (MINA);  US4080791-A   EXXON RES & ENG CO (ESSO)   NADLER M,  CAHN R P;  US4129426-A   FLEX AKE WENNBERG (FLEX-Non-standard);  WENNBERG F A AB (WENN-Non-standard);  FLEX AKE WENNBERG A (FLEX-Non-standard);  US4572178-A   TOYO CCI KK (TOCC-Non-standard)   TAKASE T,  HAYASHI Y;  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;  US4909815-A   INT AIR FILTER INC (ITAI-Non-standard)   MEYER R R;  US5013617-A   INT FUEL CELLS CORP (ITFU)   SCHEFFLER G W;  US5139546-A   NOVOBILSKI C G (NOVO-Individual)   NOVOBILSKI C G;  US5156925-A   ALCAN INT LTD (ALCN)   LAPP S P;  US5189092-A   KOSLOW TECHN CORP (KOSL-Non-standard)   KOSLOW E E;  US5207808-A   AISAN KOGYO KK (AISA)   HARUTA K,  YAMADA H,  KOEDA K;  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;  US5288306-A   TAKEDA CHEM IND LTD (TAKE)   AIBE T,  SHIBATA K;  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;  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;  US5672399-A   DONALDSON CO INC (DOND)   DUDREY D J,  KAHLBAUGH B;  US5792227-A   DONALDSON CO INC (DOND)   KAHLBAUGH B E,  HERMAN J T,  REINHART S B,  DUDREY D J;  US5792247-A   DONALDSON CO INC (DOND)   GILLINGHAM G R,  RISCH D T,  TOKAR J C,  WAGNER W M,  MATTHYS B A,  STEINBRUECK E A;  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;  US5853441-A   GROEN D D (GROE-Individual);  WITTE K W (WITT-Individual)   GROEN D D,  WITTE K W;  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;  US6235192-B1   PARKER HANNIFIN CORP (PARH)   MELFI J J,  GRIFFIN G E;  US6257242-B1   STAVRIDIS I C (STAV-Individual)   STAVRIDIS I C;  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;  US6321637-B1   HONEYWELL INT INC (HONE)   SHANKS A E,  MONNENS P J,  BAHN R R;  US6420059-B1   CALIFORNIA INST OF TECHNOLOGY (CALY)   SURAMPUDI S,  FRANK H A,  NARAYANAN S R,  CHUN W,  JEFFRIES-NAKAMURA B,  KINDLER A,  HALPERT G;  US6432177-B1   DONALDSON CO INC (DOND)   DALLAS A J,  GOGINS M A,  GRAHAM K M,  ADAMEK D E,  SKUSTER R;  US6436562-B1   EMPRISE TECHNOLOGY ASSOC CORP (EMPR-Non-standard)   DUBOSE R A;  US7132007-B1   BLUECHER GMBH (BLUE-Non-standard)   VON BLUECHER H,  OUVRY L,  KAEMPER S,  MOSKOPP M,  DE RUITER E,  BOEHRINGER B;  US6692555-B2   TOYODA BOSHOKU CORP (TOYO-Non-standard)   ODA K,  HONDA M,  INUZUKA Y,  TAKEYAMA M,  NISHIMOTO T,  MOCHIZUKI Y,  OI T;  US6695896-B2   HONDA GIKEN KOGYO KK (HOND)   HARA T,  MIHARA H;  US6835235-B2   SPORLAN VALVE CO (SPOR)   PILGRAM S P,  LACEY M G;  US7166142-B2   TUMA D L (TUMA-Individual);  LOGAN R J (LOGA-Individual)   TUMA D L,  LOGAN R J;  US7416580-B2 -- US3944403-A   SIEBE GORMAN & CO LTD (SIEB);  UK SEC FOR DEFENCE (MINA);  US4572178-A   TOYO CCI KK (TOCC-Non-standard)   TAKASE T,  HAYASHI Y;  US5207808-A   AISAN KOGYO KK (AISA)   HARUTA K,  YAMADA H,  KOEDA K;  US5288306-A   TAKEDA CHEM IND LTD (TAKE)   AIBE T,  SHIBATA K;  US6235192-B1   PARKER HANNIFIN CORP (PARH)   MELFI J J,  GRIFFIN G E;  US6257242-B1   STAVRIDIS I C (STAV-Individual)   STAVRIDIS I C;  US7132007-B1   BLUECHER GMBH (BLUE-Non-standard)   VON BLUECHER H,  OUVRY L,  KAEMPER S,  MOSKOPP M,  DE RUITER E,  BOEHRINGER B;  US6692555-B2   TOYODA BOSHOKU CORP (TOYO-Non-standard)   ODA K,  HONDA M,  INUZUKA Y,  TAKEYAMA M,  NISHIMOTO T,  MOCHIZUKI Y,  OI T;  US6695896-B2   HONDA GIKEN KOGYO KK (HOND)   HARA T,  MIHARA H;  US6835235-B2   SPORLAN VALVE CO (SPOR)   PILGRAM S P,  LACEY M G;  US7166142-B2   TUMA D L (TUMA-Individual);  LOGAN R J (LOGA-Individual)   TUMA D L,  LOGAN R J;  EP677417-A1   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  EP837238-A2   ;  EP1158590-A2   XCELLSIS GMBH (XCEL-Non-standard)   SOHMER P;  EP1162354-A2   FILTERWERK MANN & HUMMEL GMBH (FILW)   FUESSER R;  EP1195830-A2   NISSAN MOTOR CO LTD (NSMO)   ARAMAKI K;  GB2250130-A   VICKERS SHIPBUILDING & ENG (VICS);  CJBD LTD (CJBD-Non-standard)   PALMER I,  SEYMOUR C M,  DAMS R A J;  JP09026177-A   ;  US3812370-A   ENVIRONMENT/ONE CORP (ENVI-Non-standard);  US3847672-A   UNITED AIRCRAFT CORP (UNAC);  US3861894-A   BIO-DYNAMICS INC (BIOD-Non-standard);  US3925043-A   ENVIRONMENT/ONE (ENVI-Non-standard)   MATRONE J L,  LYONS W E;  US4080791-A   EXXON RES & ENG CO (ESSO)   NADLER M,  CAHN R P;  US4129426-A   FLEX AKE WENNBERG (FLEX-Non-standard);  WENNBERG F A AB (WENN-Non-standard);  FLEX AKE WENNBERG A (FLEX-Non-standard);  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;  US4909815-A   INT AIR FILTER INC (ITAI-Non-standard)   MEYER R R;  US5013617-A   INT FUEL CELLS CORP (ITFU)   SCHEFFLER G W;  US5139546-A   NOVOBILSKI C G (NOVO-Individual)   NOVOBILSKI C G;  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;  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;  US5672399-A   DONALDSON CO INC (DOND)   DUDREY D J,  KAHLBAUGH B;  US5792227-A   DONALDSON CO INC (DOND)   KAHLBAUGH B E,  HERMAN J T,  REINHART S B,  DUDREY D J;  US5792247-A   DONALDSON CO INC (DOND)   GILLINGHAM G R,  RISCH D T,  TOKAR J C,  WAGNER W M,  MATTHYS B A,  STEINBRUECK E A;  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;  US5853441-A   GROEN D D (GROE-Individual);  WITTE K W (WITT-Individual)   GROEN D D,  WITTE K W;  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;  US6033301-A   FUJI ELECTRIC CO LTD (FJIE)   SUWA N;  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;  US20010049036-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;  US6321637-B1   HONEYWELL INT INC (HONE)   SHANKS A E,  MONNENS P J,  BAHN R R;  US6420059-B1   CALIFORNIA INST OF TECHNOLOGY (CALY)   SURAMPUDI S,  FRANK H A,  NARAYANAN S R,  CHUN W,  JEFFRIES-NAKAMURA B,  KINDLER A,  HALPERT G;  US6432177-B1   DONALDSON CO INC (DOND)   DALLAS A J,  GOGINS M A,  GRAHAM K M,  ADAMEK D E,  SKUSTER R;  US6436562-B1   EMPRISE TECHNOLOGY ASSOC CORP (EMPR-Non-standard)   DUBOSE R A;  WO2001048850-A1