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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4719126 Pyrolytic deposition of metal oxide film from aqueous suspensionExpiredFeb 02, 83Jan 12, 88[B05D]
4719127 Aqueous chemical suspension for pyrolytic deposition of metal-containing filmExpiredFeb 02, 83Jan 12, 88[B05D]
4613451 Gelable blends of organosilicon-containing materials and hydrophobic polyolsExpiredJan 31, 83Sep 23, 86[C09K]
4519989 Removal of organic contaminants from bauxite and other oresExpiredFeb 22, 83May 28, 85[C01F]
4493370 Urea as a cosurfactant in enhanced oil recovery processesExpiredJan 27, 83Jan 15, 85[E21B]
D275765 Photo finishing printerExpiredSep 21, 82Oct 02, 84[]
4474458 Photographic film printerExpiredSep 21, 82Oct 02, 84[G03B]
4474645 Secondary headbox for cylinder machineExpiredDec 22, 82Oct 02, 84[D21F]
D275257 Nozzle unit for an industrial ovenExpiredAug 31, 81Aug 28, 84[]
4452711 Aqueous metalworking lubricant containing polyoxypropylene-polyoxyethylene-polyoxypropylene block copolymersExpiredJan 20, 83Jun 05, 84[C10M]
4449341 Fire containment arrangement for curtain wall constructionExpiredApr 01, 82May 22, 84[E04B, E04H]
4446292 Moisture curable compositions containing reaction products of hydrophobic polyols and monomer organosilicon-containing substancesExpiredJan 31, 83May 01, 84[C08G]
4440826 Decorative surface coveringExpiredJan 24, 83Apr 03, 84[B32B]
4394262 System for minimizing backwash water usage on self-cleaning strainersExpiredAug 06, 82Jul 19, 83[B01D]
4389982 Internal combustion engine fuel supply systemExpiredOct 20, 81Jun 28, 83[F02M, F02B]

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