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:
Mar. 10, 1987
Filed:
Feb. 04, 1985
Applicant:
Inventors:
Shinzo Ishii, Hofu, JP;
Shigeo Katsumata, Mishima, JP;
Yukou Arai, Susono, JP;
Kazuhisa Fujimoto, Shizuoka, JP;
Makoto Morimoto, Shizuoka, JP;
Assignee:
Kyowa Hakko Kogyo Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ;
U.S. Cl.
CPC ...
544342 ;
Abstract
A pharmacologically acceptable acid addition salt of DC-52 with 0.5-2.0 equivalent weight of inorganic acid, sulfonic acid, acidic amino acid, citric acid, transaconitic acid, .alpha.-ketoglutaric acid, itaconic acid, malonic acid or ascorbic acid on the basis of DC-52, having the same degree of antitumor activity as DC-52, is superior to DC-52 in stability at powdering or at preservation.