US5759712-A -- EP239169-A   BILLINGS R E (BILL-Individual)   BILLINGS R E;  GB874283-A   ;  GB2139110-A   GENERAL ELECTRIC CO (GENE);  UNITED TECHNOLOGIES CORP (UNAC)   DANTOWITZ P,  MCELROY J F,  CHLUDZINSK P J;  GB2268619-A   ROLLS ROYCE & ASSOC LTD (RORO)   GARDNER F J;  JP60033284-A   NIPPON OILS & FATS CO LTD (NIOF)   MATSUI F,  SAKAI H,  AONO S,  HATTORI K,  KAKINO S;  US4138510-A   ;  US4243508-A   DANKESE J P (DANK-Individual)   DANKESE J P;  US4252868-A   LICENTIA PATENT-VERW GMBH (LICN);  US4421579-A   DIAMOND SHAMROCK CORP (DIAS)   GOVITCH M J,  DERESPIRIS D L,  BENEZRA L L,  VAUSS E M;  US4623415-A   HITACHI LTD (HITA);  HITACHI CHEM CO LTD (HITB);  KAHARA T (KAHA-Individual)   KAHARA T,  MATSUDA S,  ISHII K,  TAKEUCHI S,  IMAHASHI J,  HONJI A;  US4661423-A   TOSHIBA KK (TOKE);  TOKYO SHIBAURA DENKI KK (TOKE)   UENO M,  SHIROGAMI T,  SEGAWA N;  US4666579-A   DOW CHEM CO (DOWC)   BEAYER R N,  MORRIS G J E,  DANG H D,  PIMLOTT J R;  US4673624-A   HOCKLEY CHEM CO LTD (HOCK)   HOCKADAY R G;  US4769297-A   INT FUEL CELLS CORP (ITFU)   REISER C A,  SAWYER R D;  US4793910-A   GAS RES INST (GASR-Non-standard)   SMOTKIN E,  BARD A J,  FOX M A;  US4804449-A   SWEENEY C T (SWEE-Individual)   SWEENEY C T;  US4818637-A   UNITED TECHNOLOGIES CORP (UNAC)   MOLTER T M,  LACONTI A B;  US4824741-A   INT FUEL CELLS CORP (ITFU)   KUNZ H R;  US4826554-A   DOW CHEM CO (DOWC)   MCINTYRE J M,  BIRDWELL J D,  SMITH B R;  US4865925-A   HUGHES AIRCRAFT CO (HUGA)   LUDWIG F A,  TOWNSEND C W;  US4931168-A   TANAKA KIKINZOKU KOGYO KK (TANI);  FURUYA C (FURU-Individual);  WATANABE M (WATA-Individual)   WATANABE M,  MOTOO S,  FURUYA N;  US5084144-A   PHYSICAL SCIENCES I (PHYS-Non-standard)   VILLAMBIRE N R K,  ANDERSON E B,  TAYLOR E J;  US5108849-A   CANADA MIN NAT DEFENCE (MIND)   WATKINS D S,  DIRCKS K W,  EPP D G;  US5173166-A   MINITECH CO (MINI-Non-standard)   TOMANTSCHGER K,  JANIS A A,  WEINBERG N L,  RAIT J M;  US5187025-A   ANALYTIC POWER CORP (ANAL-Non-standard)   KELLAND J W,  BRAUN S G;  US5234777-A   US DEPT ENERGY (USAT)   WILSON M S;  US5240786-A   INST GAS TECHNOLOGY (IGTE)   ONG E T,  MARIANOWSKI L G;  US5242764-A   BCS TECHNOLOGY INC (BCST-Non-standard)   DHAR H P;  US5252410-A   BALLARD POWER SYSTEMS INC (BLRD)   WILKINSON D P,  VOSS H H,  PRATER K B;  US5262250-A   TANAKA KIKINZOKU KOGYO KK (TANI);  WATANABE M (WATA-Individual)   WATANABE M;  US5264299-A   INT FUEL CELLS CORP (ITFU)   KRASIJ M,  WATSON P R;  US5266421-A   HUGHES AIRCRAFT CO (HUGA)   KINDLER A,  NASELOW A B,  TOWNSEND C W;  US5290323-A   YUASA BATTERY CO LTD (YUAS)   OKUYMA R,  NOMURA E;  US5316871-A   GENERAL MOTORS CORP (GENK)   SWATHIRAJAN S,  MIKHAIL Y M;  US5364711-A   TOSHIBA KK (TOKE)   YAMADA S,  KANDA M,  YAMAMOTO M,  SUZUKI N,  KANAZAWA R,  MOTOMIYA A,  KONDO T,  UCHIDA T,  HASHIMOTO K,  NIKI H,  SASAKI K,  TSURUTA S;  US5432023-A   TOSHIBA KK (TOKE)   YAMADA S,  KANDA M,  YAMAMOTO M,  SUZUKI N,  KANAZAWA R,  MOTOMIYA A,  KONDO T,  UCHIDA T,  HASHIMOTO K,  NIKI H,  SASAKI K,  TSURUTA S;  US5453331-A   UNIV CHICAGO (UYCG)   LEY K L,  BLOOM I D;  US5472799-A   TANAKA KIKINZOKU KOGYO KK (TANI);  WATANABE M (WATA-Individual);  STONEHART ASSOC INC (STON-Non-standard)   WATANABE M;  US5482568-A   HOCKADAY R G (HOCK-Individual)   HOCKADAY R G;  WO9831062-A1 -- EP1025601-A1   HOCKADAY R G (HOCK-Individual)   HOCKADAY R G;  US5252410-A   BALLARD POWER SYSTEMS INC (BLRD)   WILKINSON D P,  VOSS H H,  PRATER K B;  US5486428-A   ROLLS ROYCE PLC (RORO)   GARDNER F J,  DAY M J,  BRANDON N P,  BROWNELL J B;  EP1025601-A1 -- US4673624-A   HOCKLEY CHEM CO LTD (HOCK)   HOCKADAY R G;  US5242764-A   BCS TECHNOLOGY INC (BCST-Non-standard)   DHAR H P;  WO1997011503-A1