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. 09, 1999
Filed:
Jan. 30, 1997
Applicant:
Inventors:
Assignee:
The Pilot Ink Co., Ltd., Aichi-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D / ;
U.S. Cl.
CPC ...
106 3118 ;
Abstract
A reversible thermochromic composition is formed by blending: (a) an electron donating compound; (b) an electron accepting compound; (c) a metachromatic temperature adjuster; (d) an electron accepting, light-fastness providing agent represented by Formula I based on 1.0 part by weight of the component-(a) electron donating compound: ##STR1## wherein n represents an integer of 5 to 17; X and Y each represent C.sub.1-4 or halogen; and p and m each represent an integer of 0 to 3.
Fujita, Katsuyuki. (1999). Method for improving light-fastness of reversible thermochromic (U.S. Patent No. 5879438). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5879438
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile