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:
Jul. 24, 2001
Filed:
Apr. 05, 1999
Yasushi Kouno, Oyama, JP;
Takenobu Ogata, Tokyo, JP;
Katsuya Awano, Oyama, JP;
Kayoko Matsuzawa, Ageo, JP;
Taroh Tooru, Nogi-machi, JP;
Kyorin Pharmaceuticals Co., Ltd., Tokyo, JP;
Abstract
Novel pyrazolopyridylpyridazinone derivatives characterized by being represented by general formula (1) and pharnacologically acceptable salts thereof, which exhibit a phosphodiesterase inhibiting activity and have a selective potent bronchodilating effect on the respiratory tract; a process for the preparation of them; and bronchodilators containing the same as the active ingredient; wherein R,is C,-C,lower alkyl or C,-C,cycloalkyl; and R,, R,, R,and R,are each independently hydrogen, C,-C,lower alkyl or phenyl, or alternatively R,and R,may be united to form a double bond.