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:
Jan. 23, 1990
Filed:
Dec. 28, 1987
Applicant:
Inventors:
Isao Hayakawa, Tokyo, JP;
Shohgo Atarashi, Tokyo, JP;
Assignee:
Daiichi Seiyaku Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544105 ;
Abstract
An optically active 3,4-dihydrobenzoxazine derivative, a process for preparing the same and an intermediate of 2H-benzoxazine useful for synthesizing the above mentioned optically active 3,4-dihydrobenzoxazine are disclosed.