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. 25, 2004
Filed:
Apr. 19, 2002
Applicant:
Inventors:
Masahiro Iwata, Tsukuba, JP;
Noriyuki Kawano, Tsukuba, JP;
Tomofumi Takuwa, Tsukuba, JP;
Ryota Shiraki, Tsukuba, JP;
Miki Kobayashi, Tsukuba, JP;
Makoto Takeuchi, Tsukui, JP;
Assignee:
Yamanouchi Pharmaceutical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 3/1435 ; C07D / ;
U.S. Cl.
CPC ...
A61K 3/1435 ; C07D / ;
Abstract
2-Oxo-1,2-dihydro-1,8-naphthyridine derivatives characterized by bearing a specific substituent, —X—R , at the 3-position and a cyclic substituent, R , at the 4-position; or salts thereof. The derivatives and the salts are useful as drugs, particularly preventive or therapeutic agents for respiratory diseases related to PDE IV.