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. 14, 1992
Filed:
Nov. 23, 1990
Applicant:
Inventors:
Ajay M Madgavkar, Edwardsville, IL (US);
Carma J Gibler, Houston, TX (US);
David W Daum, Seabrook, TX (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
528488 ; 523310 ; 528490 ;
Abstract
A process is provided comprising the steps of contacting a Group VIII metal hydrogenation catalyst residue containing polymer solution with a silicate, and recovering a polymer solution comprising less than 5 ppm by weight, based on the solution, of the Group VIII metal. In a preferred embodiment, the silicate is calcium silicate, magnesium silicate or diatomaceous earth.
Madgavkar, Ajay. (1992). Removal of hydrogenation catalyst from polymer solutions by contact with (U.S. Patent No. 5104972). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5104972
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile