UNION CARBIDE INDUSTRIAL GASES TECHNOLOGY CORPORATION

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
D341887 Hospital gas delivery systemExpiredOct 17, 91Nov 30, 93[]
5064479 Thermal treatment in a fluidized bedExpiredMay 31, 90Nov 12, 91[F27B, C21D]
5055260 Reactor analysis systemExpiredJul 22, 88Oct 08, 91[G01N]
5039485 Sterilization methodExpiredSep 26, 90Aug 13, 91[A01N]
4994095 Semipermeable membranes based on specific 4,4'-(1H-alkylidene)bis[2,3,6-trialkylphenol]type polyestersExpiredDec 06, 89Feb 19, 91[B01D]
4981498 PROCESS FOR DEHYDRATION OF GASES AND COMPOSITE PERMEABLE MEMBRANES THEREFORWithdrawnFeb 12, 90Jan 01, 91[]
4905596 Combined cleaning and safety device for printing cylinderExpiredSep 30, 88Mar 06, 90[B41F]
4848094 Droplet freezing method and apparatusExpiredApr 29, 88Jul 18, 89[F25D]
4827553 pipeline bulk residue remover and methodExpiredFeb 03, 87May 09, 89[F16L, B08B]
4780118 Process and apparatus to produce ultra high purity oxygen from a liquid feedExpiredJul 28, 87Oct 25, 88[F25J]
4769054 Abatement of vapors from gas streams by solidificationExpiredOct 21, 87Sep 06, 88[F25J]
4755202 Process and apparatus to produce ultra high purity oxygen from a gaseous feedExpiredJul 28, 87Jul 05, 88[F25J]
4741694 Method for calcining carbonaceous materialsExpiredMar 29, 85May 03, 88[F27B]
4726974 Vacuum insulation panelExpiredOct 08, 86Feb 23, 88[B32B]
4699654 Melting furnace and method for melting metalExpiredApr 08, 86Oct 13, 87[C22B, C27C]
4664689 Method and apparatus for rapidly cooling optical fiberExpiredFeb 27, 86May 12, 87[C03C, C03B]
4647299 Process to produce an oxygen-free krypton-xenon concentrateExpiredAug 16, 84Mar 03, 87[F25J]
4627456 Valve system for particulate solid flow controlExpiredJul 31, 85Dec 09, 86[F16K]
4574006 Process to produce a krypton-xenon concentrate from a liquid feedExpiredAug 16, 84Mar 04, 86[F25J]
4568528 Process to produce a krypton-xenon concentrate and a gaseous oxygen productExpiredAug 16, 84Feb 04, 86[C01B]

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