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:
Dec. 26, 2006
Filed:
Jul. 30, 2002
Applicants:
Masao Tsuji, Kurashiki, JP;
Yoko Nakano, Kurashiki, JP;
Shigeo Ohzono, Kurashiki, JP;
Makoto Nakazawa, Kurashiki, JP;
Inventors:
Masao Tsuji, Kurashiki, JP;
Yoko Nakano, Kurashiki, JP;
Shigeo Ohzono, Kurashiki, JP;
Makoto Nakazawa, Kurashiki, JP;
Assignee:
Kuraray Co., Ltd., Kurashiki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07J 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
7α-Hydroxy-pregn-4-en-3-one-20-carbaldehyde, a production method thereof and a method for producing 7α,21 -dihydroxy-20-methyl-pregn-4-en-3-one, which is useful as a synthetic intermediate for pharmaceuticals such as squalamine and the like, efficiently at high purity from the carbaldehyde.