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:
May. 12, 2020
Filed:
Nov. 18, 2016
Applicants:
Kyowa Hakko Bio Co., Ltd., Tokyo, JP;
Otsuka Pharmaceutical Factory, Inc., Naruto-shi, JP;
Inventors:
Assignees:
KYOWA HAKKO BIO CO., LTD., Tokyo, JP;
OTSUKA PHARMACEUTICAL FACTORY, INC., Naruto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 59/01 (2006.01); C07C 51/43 (2006.01); C30B 7/10 (2006.01); C30B 29/58 (2006.01);
U.S. Cl.
CPC ...
C07C 59/01 (2013.01); C07C 51/43 (2013.01); C30B 7/105 (2013.01); C30B 29/58 (2013.01); C07B 2200/13 (2013.01);
Abstract
The present invention provides a crystal of a monovalent cation salt of 3-hydroxyisovaleric acid (hereinafter, referred to as HMB), which is excellent in solubility and easy to handle, and a process for producing the crystal. A crystal of a monovalent cation salt of HMB is precipitated in an aqueous HMB solution containing a monovalent cation-containing compound and having a pH of 4.0 to 9.0, and the crystal of a monovalent cation salt of HMB is thereafter collected from the aqueous solution.