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:
Dec. 27, 2016
Filed:
Mar. 14, 2014
Applicant:
Segan Industries, Inc., Burlingame, CA (US);
Inventor:
Hans O. Ribi, Hillsborough, CA (US);
Assignee:
Segan Industries, Inc., Burlingame, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
C08K 5/103 (2006.01); C09D 5/00 (2006.01); C09D 7/12 (2006.01); C09D 133/02 (2006.01);
U.S. Cl.
CPC ...
C09D 5/00 (2013.01); C09D 7/1233 (2013.01); C09D 133/02 (2013.01); C08K 5/103 (2013.01);
Abstract
Aspects of the invention include color change compositions having a color former and color developer composition that transitions from a first color state to a second color state upon application of an applied stimulus and an amount of a copolymer sufficient to eliminate background color of the color former and color developer composition during transition from the first color state to the second color state. Methods for preparing and devices employing the color change compositions of the invention are also described.