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:
May. 16, 1989
Filed:
Nov. 03, 1987
Applicant:
Inventors:
Claude Stein, Gouvieux, FR;
Hitoshi Nagai, Matsudo, JP;
Akio Ueda, Yokohama, JP;
Satoru Isomura, Yokohama, JP;
Assignee:
Societe Chimique des Charbonnages, S.A., Paris, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526283 ; 526280 ; 526281 ; 526282 ; 526257 ;
Abstract
Articles having shape recovering properties and methods of using them are disclosed. An article is formed from a composition containing a norbornene polymer by forming said polymer into an article having a first shape, then deforming the article in the solid state to a second shape and cooling the article to a first temperature at or below the glass transition temperature of the polymer to retain said second shape, and finally heating said article to a temperature above the first temperature to recover the first shape.