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. 20, 2000
Filed:
Dec. 19, 1996
Applicant:
Inventors:
Pierre Dufresne, Valence, FR;
Nilanjan Brahma, La Voulte sur Rhone, FR;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; B01J / ;
U.S. Cl.
CPC ...
502 33 ; 502 27 ; 502 29 ; 502168 ; 502216 ;
Abstract
A process for presulfurizing a refining catalyst or petrochemical catalyst consists of bringing a catalyst into contact with liquid elementary sulfur or elementary sulfur dissolved in a liquid, preferably another sulfur compound such as an organic polysulfide, in the presence of a stabilizing agent, e.g., a fatty acid, mercaptan or alcohol.