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:
Apr. 10, 1990
Filed:
Nov. 03, 1988
Applicant:
Inventor:
Michael F Rubner, Chelmsford, MA (US);
Assignee:
GTE Laboratories Incorporated, Waltham, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528480 ; 522164 ; 522176 ; 525345 ; 525420 ;
Abstract
Polyamide compositions which contain as part of their repeat structure a reactive diacetylene groups are disclosed. The cross-polymerized products of these polyamides are thermochromic polydiacetylene compounds. The compositions of the present invention do not exhibit a hysteresis effect during temperature cycling.