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. 05, 1993
Filed:
May. 13, 1991
Applicant:
Inventor:
Tsutomu Yamanaka, Nakatsu, JP;
Assignee:
Yoshitomi Pharmaceutical Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548407 ; 548525 ; 548950 ; 546 15 ; 546207 ; 544-6 ; 544584 ; 544 10 ; 544151 ; 544230 ; 544376 ; 540543 ; 540544 ; 540575 ;
Abstract
The present invention provides a new diastereomer ester compound which is useful as an intermediate in the making of an optically active 3,4-dihydro-3,4-epoxy-2H-1-benzopyran compound.