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:
Sep. 03, 1985
Filed:
Apr. 03, 1984
Applicant:
Inventors:
Raymond Lee, Elk Grove Village, IL (US);
David W Okey, Downers Grove, IL (US);
Gregory A Ferro, Mt. Prospect, IL (US);
Assignee:
IMI-Tech Corporation, Elk Grove Village, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
521189 ; 521180 ; 528353 ;
Abstract
A polyimide and a process for its preparation wherein the polyimide is prepared from reaction of an organic tetracarboxylic acid or derivative thereof with a mixture of an aromatic diamine and an amine-terminated butadiene-nitrile copolymer. The polyimides of the invention are particularly useful in the preparation of flexible foams.
Lee, Raymond. (1985). Polyimide foam prepared from amino terminated butadiene acrylonitrile (U.S. Patent No. 4539342). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4539342
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile