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:
Feb. 21, 1995
Filed:
Apr. 23, 1993
Applicant:
Inventors:
Ikuo Shimizu, Yokkaichi, JP;
Hiroshi Toyoda, Yokkaichi, JP;
Yukiyoshi Ito, Tokyo, JP;
Tsutomu Sato, Tokyo, JP;
Assignee:
Kyowa Hakko Kogyo Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
544345 ; 544234 ; 546 17 ; 546101 ; 546165 ; 546166 ; 430495 ;
Abstract
There are described a novel squarylium compound represented by the formula (I): ##STR1## and an optical information recording medium using the squarylium compound in the recording layer.