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:
Sep. 02, 1997
Filed:
Jan. 04, 1996
Tatsuo Katayama, Kyoto, JP;
Yoshihiro Nishikawa, Kyoto, JP;
Mayumi Hayashi, Kyoto, JP;
Hiroshi Nakajima, Kyoto, JP;
Masahiro Ozaki, Tokyo, JP;
Daiichi Watanabe, Tokyo, JP;
Unitika Ltd., Hyogo, JP;
Abstract
The present invention is directed to diadenosine tetraphosphate (AP4A) tetrasodium salt dodecahydrate crystals represented by the following structure: ##STR1## Compared with the conventional amorphous anhydride of AP4A tetrasodium salt, the AP4A tetrasodium salt dodecahydrate crystals of the present invention have a low hygroscopicity and very stable physical properties. During storage, they are scarcely affected by environmental humidity. Thus, the present crystals can be easily handled as a medicine or a starting material for preparing a medicine, which broadens their application range.