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:
Aug. 17, 1982
Filed:
Dec. 20, 1979
Applicant:
Inventor:
Francis J De Blauwe, Lubbeek, BE;
Assignee:
N.V. Raychem S.A., Kessle-lo, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C10K / ; C09D / ; C09D / ;
U.S. Cl.
CPC ...
264230 ; 264D / ; 53442 ; 116207 ; 116216 ; 252408 ; 138104 ; 422 61 ; 285 41 ; 285 93 ; 285187 ; 285381 ;
Abstract
Heat-recoverable articles carrying a 'thermochromic' composition comprising organic materials which melt and decompose to provide a color-change indicating that the articles have been heated to a certain temperature, e.g. to melt a sealant carried on the surface of the article which is to contact a substrate around which the article is to be shrunk. Mixtures of relatively simple compounds may be used to graduate the color change, and means are described for preventing reversion to the original color on long-term exposure to moisture.