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:
Mar. 20, 1979
Filed:
Sep. 08, 1977
Applicant:
Inventor:
Robert G Keske, Naperville, IL (US);
Assignee:
Standard Oil Company (Indiana), Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528331 ; 260 / ; 528310 ;
Abstract
Novel amino-substituted derivatives of 4-t-butylphthalic anhydride are used as monomers to produce novel polyimides with improved solubility characteristics. Increased solubility in organic solvents permits these polyimides to be used in coating applications where structurally similar polyimides could not otherwise be used.
Quick Actions:
Keske, Robert. (1979). Polyimide from amino substituted 4-t-butylphthalic anhydride (U.S. Patent No. 4145522). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4145522
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile