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. 08, 1995
Filed:
Nov. 09, 1993
Applicant:
Inventors:
Miharu Yoshida, Suwa, JP;
Hiroko Hayashi, Suwa, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D / ;
U.S. Cl.
CPC ...
106 / ; 106 / ;
Abstract
An ink composition excellent in blackness and storage stability is disclosed which comprises a first dye represented by the following general formula (I) and a second dye selected from the group consisting of C.I. Direct Yellow 86, 132 and 144 and compounds represented by the following general formulae (II) and (III): ##STR1##
Yoshida, Miharu. (1995). Black ink composition excellent in black (U.S. Patent No. 5439517). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5439517
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile