US5571703-A -- US1888935-A   ;  US2348451-A   ;  US2890138-A   ;  US3972775-A   US ENERGY R & D ADMIN (USAT)   WILKE C R,  MITRA G;  US3990945-A   BIO RES CENT CO LTD (BIOR-Non-standard);  US4009075-A   BIO-INDUSTRIES INC (BIOI-Non-standard)   HOGE W H;  US4025356-A   ANSTALT GEMASS (GEMA-Non-standard)   NYMAN G A,  SAVO G;  US4063903-A   COMBUSTION EQUIP (COMB-Non-standard);  US4069145-A   MAGNETIC SEPARATION (MAGN-Non-standard)   SOMMER E J,  KENNY G R;  US4093516-A   LANG J L (LANG-Individual)   LANG J L;  US4094740-A   LANG J L (LANG-Individual)   LANG J L;  US4110281-A   HELVISOL AG (HELV-Non-standard);  DREER G (DREE-Individual);  US4237226-A   DARTMOUTH COLLEGE (DARC)   GRETHLEIN H E;  US4242455-A   NAT DISTILLERS & CHEM CORP (NADI)   MULLER W C,  MILLER F D;  US4243750-A   NAT DISTILLERS & CHEM CORP (NADI)   MULLER W C,  MILLER F D;  US4266027-A   NAT DISTILLERS & CHEM CORP (NADI)   MULLER W C,  MILLER F D;  US4266981-A   PURDUE RES FOUND (PURD)   TSAO G T,  CHOU T Y;  US4287303-A   ;  US4287304-A   ;  US4288550-A   AGENCY OF IND SCI & TECHNOLOGY (AGEN)   ISHIDA M,  HAGA R,  OTAHARA Y;  US4289540-A   ;  US4321328-A   HOGE W H (HOGE-Individual)   HOGE W H;  US4326036-A   HAYES F W (HAYE-Individual)   HAYES F W;  US4330625-A   NAT DISTILLERS & CHEM CORP (NADI)   MILLER F D,  MULLER W C;  US4341353-A   RADER COMPANIES INC (RADE-Non-standard);  BELOIT CORP (BELO)   HAMILTON F G,  KELYMAN J;  US4342830-A   HOLLOWAY C C (HOLL-Individual)   HOLLOWAY C C;  US4350766-A   PURDUE RES FOUND (PURD)   MEHLBERG R L;  US4384897-A   UNIV CALIFORNIA (REGC)   BRINK D L;  US4393136-A   TATE & LYLE LTD (TATL)   CHEETHAM P S J;  US4400469-A   HARRIS F B (HARR-Individual)   HARRIS F B;  US4407955-A   NAT DISTILLERS & CHEM CORP (NADI)   MULLER W C,  MILLER F D;  US4414330-A   SUPRATON ZUCKER (SUPR-Non-standard)   ZUCKER F J,  OSTHAUS G,  FISCH K;  US4421856-A   ;  US4432805-A   TAMPELLA OY AB (TAMA)   NUUTTILA A I,  POHJOLA V J;  US4436586-A   KAMYR INC (KMYI)   ELMORE C L;  US4442210-A   ;  US4490469-A   COMMONWEALTH SCI & IND RES ORG (CSIR)   KIRBY K D,  MARDON C J;  US4497896-A   ST LAWRENCE TECHNOLOGIES LTD (SLAW-Non-standard)   ASSARSSON P G,  NAGASUYE J H;  US4503079-A   DUDA & SONS INC A (DUDS)   KING D W,  PLACZEK T M;  US4522726-A   ;  US4522920-A   ALFA LAVAL AB (ALFA);  NOBEL KEMATUR AB (KEMA)   THORSSON C R,  VIIRA I J;  US4540664-A   US DEPT ENERGY (USAT)   JOHNSON E A,  DEMAIN A L,  MADIA A;  US4541530-A   MAGNETIC SEPARATION (MAGN-Non-standard);  NAT RECOVERY TECHN (NARE-Non-standard)   KENNY G R,  SOMMER E J,  SHEPARD M E;  US4553977-A   FRY T H (FRYT-Individual)   FRY T H;  US4564595-A   NEVES A M (NEVE-Individual);  BIOMASS INT INC (BIOM-Non-standard)   NEVES A M;  US4578353-A   ST LAWRENCE REACTOR (STLA-Non-standard)   ASSARSSON P G,  NAGASUYE J H;  US4612286-A   KAMYR INC (KMYI)   SHERMAN M I,  ELMORE C L;  US4614548-A   ;  US4617270-A   ANDERSON C G (ANDE-Individual)   ANDERSON C G;  US4622224-A   ;  US4650689-A   URBAN FUELS INC (URBA-Non-standard)   HEDRICK W S;  US4692167-A   OTV OMNIUM DE TRAIT (VEOL)   LEVASSEUR J P;  US4709903-A   ;  US4749651-A   ;  US4752579-A   UOP INC (UNVO)   ARENA B J,  ALLENZA P;  US4764276-A   PROGRESS EQUITIES INC (PROG-Non-standard);  ADV SEPARATION TECH (ADSE-Non-standard)   BERRY W W,  SCHMEDA R A,  KIBLER H S;  US4874134-A   WIENS T J (WIEN-Individual)   WIENS T J;  US4882177-A   ;  US4952503-A   ALFA LAVAL AB (ALFA);  GRANSTEDT J (GRAN-Individual);  NOBEL CHEMATUR AB (KEMA);  CHEMATUR AB (CHEM-Non-standard)   GRANDSTEDT J;  US4952504-A   PAVILON S J (PAVI-Individual)   PAVILON S J;  US4974781-A   PLACZEK FAMILY TRUS (PLAC-Non-standard)   PLACZEK T M;  US5009672-A   VEZZANI SPA (VEZZ-Non-standard)   RUFFO G,  VEZZANI L;  US5036005-A   GEORGIA TECH RES CO (GTEK)   TEDDER D W;  US5053231-A   ;  US5060871-A   ALCAN INT LTD (ALCN)   BRASSINGA R D,  DALMIJN W L;  US5084104-A   SUOMEN XYROFIN OY (SUXY-Non-standard);  CULTOR LTD (CULT-Non-standard)   HEIKKILA H,  HYOKY G;  US5104419-A   FUNK H F (FUNK-Individual)   FUNK H F;  US5135861-A   PAVILON S J (PAVI-Individual)   PAVILON S J;  US5182199-A   ELSWORTH BIOTECHNOLOGY LTD (ELSW-Non-standard)   HARTLEY B S;  US5184780-A   FIRST DOMINION HOLDINGS INC (FIRS-Non-standard)   WIENS T J;  US5188673-A   CLAUSEN E C (CLAU-Individual)   CLAUSEN E C,  GADDY J L;  US5198074-A   CIA IND BRASILEIRAS PORTELA (INBR-Non-standard)   VILLAVICENCIO E J,  DOS SANTOS J B;  US5231017-A   SOLVAY ENZYMES INC (SOLV)   LANTERO O J,  FISH J J;  US5258293-A   DARTMOUTH COLLEGE (DARC)   LYND L R,  HOGSETT D A,  SPIELES G;  US5266337-A   MOSELLAND EG (MOSE-Non-standard);  MOSELLAND E G (MOSE-Individual)   BARWALD G,  PILZ H;  US5407817-A   CONTROLLED ENVIRONMENTAL SYSTEMS CORP (CONT-Non-standard)   CHIEFFALO R,  LIGHTSEY G R