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. 28, 1987
Filed:
Jan. 15, 1985
Applicant:
Inventor:
William D Carlomagno, Redwood City, CA (US);
Assignee:
Raychem Corporation, Menlo Park, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
264132 ; 101426 ; 156 85 ; 156277 ; 264230 ;
Abstract
An article which in use is heated to an elevated utilization temperature comprises a thermochromic composition, which when heated to a transition temperature, provides a visible color change in less than about 5 seconds. The transition temperature is at least 30.degree. C. greater than the utilization temperature. To place visible indicia on the article, the article is heated to a temperature at least as great as the transistion temperature.