GULF RESEARCH AND DEVELOPMENT COMPANY, A CORP. OF DE.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4758544 Catalyst composition and hydroprocessing of oils using sameExpiredJul 17, 85Jul 19, 88[B01J]
4615996 Dual function cracking catalyst (DFCC) compositionExpiredAug 25, 83Oct 07, 86[B01J]
4535115 Method of preparation of polyimide acidsExpiredAug 20, 84Aug 13, 85[C08L]
4524171 Preparation of an aromatic polyimide acid by solution polymerization using propylene glycol methyl etherExpiredAug 20, 84Jun 18, 85[C08L]
4420930 Process for operating a furnace or a combustion engineExpiredFeb 09, 81Dec 20, 83[F02C]
4403998 Process for preparing coal suspensionsExpiredDec 24, 81Sep 13, 83[C10L]
4390661 Novel composition and process for producing solid resin therefromExpiredMay 28, 82Jun 28, 83[C08G]
4384134 Process for preparing organic acidsExpiredAug 06, 81May 17, 83[C07C]
4382137 Molded resin product and process for producing sameExpiredFeb 09, 81May 03, 83[C08G]
4382146 Organic acids and process for preparing sameExpiredMar 11, 82May 03, 83[C07C]
4381414 Fuel having reduced tendency to particulate dissemination under shockExpiredMay 06, 81Apr 26, 83[C10L]
4376061 Polymerizing olefins with a novel catalystExpiredJan 23, 81Mar 08, 83[C08F]
4361671 Novel composition and process for producing solid resin therefromExpiredAug 06, 81Nov 30, 82[C08G]
4361707 Process for producing aldehydesExpiredAug 03, 81Nov 30, 82[C07C]
4339346 Bituminous emulsionsExpiredJan 09, 80Jul 13, 82[B01J, C08L]
4334084 Organic acids and process for preparing sameExpiredMay 30, 78Jun 08, 82[C07C]
4332695 Hydrocarbon emulsionsExpiredJan 09, 80Jun 01, 82[B01J]
4320223 Molded epoxy resin product containing acids from oxidation of carbonaceous materials and process for producing sameExpiredNov 24, 80Mar 16, 82[C08G]
4313499 Subterranean gasification of bituminous coalExpiredJul 21, 80Feb 02, 82[C10J, E21B, E21C]
4305728 Coal suspensions and process for preparing sameExpiredDec 19, 80Dec 15, 81[C10L]

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