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:
Sep. 24, 2002
Filed:
Nov. 09, 2000
Applicant:
Inventors:
Makoto Satsuki, Okayama, JP;
Akira Shinpo, Okayama, JP;
Yasuyo Ooga, Okayama, JP;
Sadaharu Suga, Okayama, JP;
Atsushi Oda, Kanagawa, JP;
Hiroshi Tada, Kanagawa, JP;
Yoshikazu Sakaguchi, Kanagawa, JP;
Assignee:
Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo, Okayama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 3/1353 ; C07D / ;
U.S. Cl.
CPC ...
A61K 3/1353 ; C07D / ;
Abstract
Disclosed are pyran derivatives, which have distinctive sensitivity to visible light and distinctive luminous ability. The derivatives are useful in photopolymerization, electroluminescence, and dye lasers, and are obtainable through a step of reacting a compound having a 4-cyanomethylene-2-methyl-4H-pyran skeleton with a compound having a 3-formylcoumarin skeleton.