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:
Aug. 31, 1999
Filed:
Apr. 17, 1997
Applicant:
Inventor:
Hirokazu Shimada, Shizuoka, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430138 ; 430157 ; 430170 ; 430171 ; 430177 ;
Abstract
A heat development type duplicating material having a recording layer which is formed on a support. The recording layer comprises a photosensitive diazo compound and a coupler that reacts with the diazo compound to develop color. Furthermore, the duplicating material contains an ascorbic acid derivative. The heat development type duplicating material generates little stain in background areas, exhibits satisfactory storage stability, and provides a high image density.
Shimada, Hirokazu. (1999). Heat development duplicating material comprising ascorbic acid (U.S. Patent No. 5945247). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5945247
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile