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. 04, 1992
Filed:
Mar. 16, 1990
Applicant:
Inventors:
Assignees:
Ricoh Company, Ltd., Tokyo, JP;
Kyowa Hakko Kogyo Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 64 ; 428 65 ; 428913 ; 369288 ; 346 / ; 3461351 ; 430495 ; 430948 ;
Abstract
Squarylium compounds having the following formula (I), ##STR1## and an optical information recording medium comprising a substrate, and a recording layer formed on the substrate, comprising a squarylium compound having formula (II) are disclosed: ##STR2##
Quick Actions:
Satoh, Tsutomu. (1992). Squarylium compounds and optical information recording medium using the (U.S. Patent No. 5085909). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5085909
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