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:
Mar. 06, 1979
Filed:
Apr. 03, 1975
Applicant:
Inventor:
Edward D O'Brian, Anaheim, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; G09F / ;
U.S. Cl.
CPC ...
350354 ; 40442 ; 40448 ; 40542 ; 40544 ;
Abstract
Display arrangements useful as art forms and useful in advertising applications can be constructed by coating areas of the surface of a support with differently colored compositions, each of which is capable of appearing as being of one color at one temperature and as being of another color at a different temperature. The compositions should be differently colored at at least one temperature. The color-temperature effects achieved are obtained through the use of what are termed reversible thermochromic compounds or compositions. Elements may be provided on the support for regulating the temperatures of the various areas.