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:
Feb. 18, 1992
Filed:
Nov. 23, 1990
Applicant:
Inventors:
Ajay M Madgavkar, Edwardsville, IL (US);
David W Daum, Seabrook, TX (US);
Carma J Gibler, Houston, TX (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
523310 ; 528483 ;
Abstract
A process is provided comprising the steps of contacting a polymer solution which contains Group VIII metal hydrogenation catalyst residue with molecular oxygen, contacting the polymer solution with activated carbon, and recovering a polymer cement comprising less than 5 ppm by weight, based on the solution of Group VIII metals.
Madgavkar, Ajay. (1992). Removal of hydrogenation catalyst from polymer solutions by contact with (U.S. Patent No. 5089541). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5089541
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile