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:
Apr. 20, 1982
Filed:
Aug. 08, 1980
Applicant:
Inventor:
David B Bartholic, Watchung, NJ (US);
Assignee:
Engelhard Minerals & Chemicals Corporation, Edison, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G / ; C10G / ;
U.S. Cl.
CPC ...
208 91 ; 208 50 ; 208 / ; 208 / ; 208 55 ; 208 73 ; 208127 ; 2524 / ;
Abstract
Metals deposited on an inert contact material during high temperature decarbonizing and demetallizing of heavy petroleum stocks are inactivated by mixing the contact material with a silica donor and reacting the mixture at high temperature in the presence of steam to induce migration of silica from the donor to mask metal on the contact material.