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. 05, 1982
Filed:
Sep. 04, 1981
Applicant:
Inventor:
J Ronald Spence, Bartlesville, OK (US);
Assignee:
Standard Oil Company (Indiana), Chicago, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ;
U.S. Cl.
CPC ...
525211 ; 525192 ; 525194 ; 525240 ; 525232 ;
Abstract
An effective amount of polyisobutylene effectively reduces polymerization and cross-linking reactions resulting in molecular weight and viscosity increase during production of dispersant viscosity index improvers by the amination and/or sulfurization of polyethylene containing polymers.
Spence, J. (1982). Sulfurized/aminated mixture of ethylene-based polyolefin and (U.S. Patent No. 4352911). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4352911
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile