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:
Jul. 26, 1988
Filed:
Apr. 30, 1987
Applicant:
Inventors:
Hiroaki Umeda, Tokyo, JP;
Mamoru Suzuki, Tokyo, JP;
Akira Hasegawa, Tokyo, JP;
Kunio Hata, Tokyo, JP;
Assignee:
Jujo Paper Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09D / ;
U.S. Cl.
CPC ...
106 30 ; 106 21 ; 427150 ; 503216 ; 503212 ; 503225 ; 525534 ; 528205 ;
Abstract
The color-developing agent for pressure-sensitive recording sheet comprises the polyvalent-metal salt of carboxylated terpenephenol resin. The color-developing sheet containing the above color-developing agent provides excellent yellowing-resistance, superior color-developing ability and improved fastness of the colored image.