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SEARCH: GO TO ADVANCED SEARCH LOGIN: Login Create Free Account HOME SEARCH PATENTS CHEMICAL SEARCH DATA SERVICES HELP Selective hydrodesulfurization of naphtha using spent resid catalyst United States Patent 5423975 Ads by Google New Filling in Japan Bio,Medicinel,Food,Chemistry,etc. www.hirota-pat.com/e_index Naphtha is selectively hydrodesulfurized using spent resid upgrading catalyst to remove sulfur while minimizing loss in octane level due to olefin saturation. Ads by Google Medical Device Patents www.skgf.com/medical Sequence Listings Sequence Listing Preparation Worldwide Compliance www.seqidno.com Made-in-China.com China Manufacturers Directories Help Global Buyers Sourcing Easily. Made-in-China.com Patents and Trademarks Efficient Attorney filing service for Australia and New Zealand www.aptpat.com US Patent References: Selective hydrodesulfurization of naphtha using deactivated hydrotreating catalyst
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Sudhakar et al. - February, 1994 - 5286373 Process for reducing nitrogen and/or oxygen heteroatom content of a mineral oil Rankel et al. - November, 1983 - 4414102 Method for reducing the total acid number of a middle distillate oil Plundo et al. - April, 1975 - 3876532 Catalyst for residua demetalation and desulfurization Rosinski et al. - April, 1975 - 3876523 Desulfurization of cracked gasolines Stiles et al. - May, 1957 - 2793170 Inventors: Sudhakar, Chakka (Wappingers Falls, NY) Sandford, Gerald G. (Glenham, NY) Bhattacharya, Ajit K. (Hopewell Junction, NY) Application Number: 07/910051 Publication Date: 06/13/1995 Filing Date: 07/08/1992 Export Citation: Click for automatic bibliography generation Assignee: Texaco Inc. (White Plains, NY) Primary Class: 208/216R Other Classes: 208/213, 208/216PP, 208/217, 208/251H International Classes: C10G45/08 ; C10G45/02 ; (IPC1-7): C10G45/04 Field of Search: 208/213, 208/216R, 208/216PP, 208/217, 208/251H View Patent Images: Download PDF 5423975 PDF help Ads by Google Patent Information The world’s largest and most import patent databases on one platform www.stn-international.de
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DeltaPatents Supports your Patent requirements in Europe and the Netherlands www.DeltaPatents.com Rambus: 1990 - 2010 Video: A Company of Inventors Award-winning technology www.rambus.com Primary Examiner: Pal, Asok Assistant Examiner: Griffin, Warren D. Attorney, Agent or Firm: Gibson, Henry H. Claims: We claim: 1. A process for selectively hydrodesulfurizing naphtha comprising contacting naphtha, containing thiohydrocarbons and olefins, with hydrogen in the presence of spent resid upgrading catalyst under hydrodesulfurization conditions to selectively make hydrogen sulfide and desulfurized hydrocarbons while retaining high olefin content of at least about 50 weight percent of the olefin present in the naphtha feedstock. 2. The process of claim 1 wherein the catalyst comprises Group VI and VIII metals on a porous
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