LUMMUS COMPANY, THE

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4857151 Phenol purificationExpiredJun 28, 82Aug 15, 89[C07C, B01D]
4851086 Production of high purity phenol by steam distillationExpiredOct 31, 83Jul 25, 89[C07C, B01D]
4698219 Treatment of waste from iron ore reductionExpiredOct 11, 83Oct 06, 87[C01B, C01F, C21B]
4558167 Hydrogen chloride-propylene separationExpiredAug 01, 83Dec 10, 85[C07C]
4544476 Coal liquefaction and hydrogenationExpiredDec 07, 83Oct 01, 85[C10G]
4539183 Distribution grid support structureExpiredMay 13, 83Sep 03, 85[B01J]
4532012 Production of high purity phenol by distillation with steam and a solventExpiredOct 31, 83Jul 30, 85[C07C]
4522700 Coal liquefactionExpiredAug 13, 84Jun 11, 85[C10G]
4511670 Catalysts containing mixed oxides of vanadium, phosphorus, and aluminum and/or boronExpiredAug 17, 83Apr 16, 85[C07D, B01J]
4510258 Catalysts containing mixed oxides of vanadium and phosphorusExpiredAug 17, 83Apr 09, 85[C07D, B01J]
4504364 Phenol purificationExpiredJun 28, 82Mar 12, 85[C07C]
4502997 Treatment of purge gasExpiredMar 04, 83Mar 05, 85[C07C]
4503231 Hydrolysis of nitriles to amides with quaternary ammonium hydroxideExpiredJul 25, 83Mar 05, 85[C07D, C07C, C07B]
4496752 Production of epoxy compounds from olefinic compoundsExpiredMay 03, 79Jan 29, 85[C25B, C07D]
4496753 Saponification of chlorohydrinsExpiredSep 26, 83Jan 29, 85[C07D]
4496777 Production of halohydrinsExpiredNov 09, 83Jan 29, 85[C07C]
4479020 Production of halohydrinsExpiredNov 12, 82Oct 23, 84[C07C]
4476160 Fluidized bed systemExpiredJun 14, 82Oct 09, 84[F27B]
4457834 Recovery of hydrogenExpiredOct 24, 83Jul 03, 84[C10G]
4443620 Production of epoxy compounds from olefinic compoundsExpiredMay 03, 79Apr 17, 84[C07D]

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