The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 1992
Filed:
Apr. 30, 1991
Applicant:
Inventors:
Peter Kokayeff, Fullerton, CA (US);
Danford E Clark, Fountain Valley, CA (US);
Howard D Simpson, Irvine, CA (US);
Assignee:
Union Oil Company of California, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208 88 ; 208210 ; 208212 ; 2082 / ; 2082 / ; 2082 / ;
Abstract
A catalytic hydrotreating process wherein silicon-containing contaminants contained in a hydrocarbon feedstream are deposited onto a hydrotreating catalyst bed during hydrotreating in a manner providing improved catalyst stability. Hydrotreating catalysts having relatively high activities and low surface areas are located downstream of upstream hydrotreating catalysts having relatively low activities and high surface areas.