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Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US42618135 Nov 197914 Apr 1981Atlantic Richfield CompanyDenitrogenation of oils with reduced hydrogen consumption
US427100927 Jun 19792 Jun 1981Occidental Research CorporationMethod for reducing the nitrogen content of shale oil
US427236127 Jun 19799 Jun 1981Occidental Research CorporationMethod for reducing the nitrogen content of shale oil
US448500715 Jun 198227 Nov 1984Environmental Research and Technology Inc.Process for purifying hydrocarbonaceous oils
US462344427 Jun 198518 Nov 1986Occidental Oil Shale, Inc.Upgrading shale oil by a combination process
US467186527 Sep 19859 Jun 1987Shell Oil CompanyTwo step heterocyclic nitrogen extraction from petroleum oils
US473117424 Jun 198715 Mar 1988Union Oil Company of CaliforniaProcess for cracking nitrogen-containing feedstocks
US47494726 Mar 19877 Jun 1988Shell Oil CompanyTwo step heterocyclic nitrogen extraction from petroleum oils
US479093029 May 198713 Dec 1988Shell Oil CompanyTwo-step heterocyclic nitrogen extraction from petroleum oils
US49605076 Oct 19892 Oct 1990Shell Oil CompanyTwo-step heterocyclic nitrogen extraction from petroleum oils
US498513914 Jul 198815 Jan 1991Shell Oil CompanyTwo-step heterocyclic nitrogen extraction from petroleum oils with reduced refinery equipment