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:
May. 05, 1992
Filed:
Feb. 26, 1991
Applicant:
Inventors:
Fumiko Hamaguchi, Tokyo, JP;
Tatsuo Nagasaka, Hachioji, JP;
Rie Hakamada, Kawasaki, JP;
Einosuke Sakurai, Saitama, JP;
Assignee:
Nisshin Flour Milling Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
514375 ; 514387 ; 514250 ; 548221 ; 548375 ; 544252 ;
Abstract
Pyrrolidine derivatives of formula (I) are disclosed. ##STR1## wherein the ring A represents the following heterocyclic ring ##STR2## The compounds of formula (I) are useful as nootropic agents.