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:
Apr. 22, 2003
Filed:
Apr. 11, 2001
Applicant:
Inventors:
Yutaka Tomoda, Shizuoka, JP;
Nobuhito Ashikawa, Shizuoka, JP;
Yasuki Kato, Shizuoka, JP;
Kunio Ito, Shizuoka, JP;
Assignee:
Kyowa Hakko Kogyo Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
C07D / ;
Abstract
An aqueous solution of a pyrazoloacridone compound or pharmaceutical salt is stabilized using an acid, placing the solution in a well-closed container, evacuating air in the container, and sealing the container.