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:
Oct. 17, 1995
Filed:
Mar. 31, 1994
Applicant:
Inventors:
Robson F Storey, Hattiesburg, MS (US);
Donn A Dubois, Houston, TX (US);
Dale L Handlin, Jr, Houston, TX (US);
Bret J Chisholm, Mt. Vernon, IN (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M / ; C08F / ;
U.S. Cl.
CPC ...
252 58 ; 545 10 ; 545 11 ; 545 12 ; 525 98 ; 525314 ; 525319 ;
Abstract
The present invention is the synthesis of star polymers containing polyisobutylene (PIB) via the arm-first, core-last method. These polymers are superior in properties to known hydrogenated polyisoprene star-branched polymers due to their inherent lack of unsaturation.
Storey, Robson. (1995). Synthesis of polyisobutylene star-branched polymers via living (U.S. Patent No. 5458796). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5458796
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile