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:
Jul. 20, 1982
Filed:
Mar. 05, 1981
Applicant:
Inventors:
Hiroyuki Nohira, Urawa, Saitama, JP;
Hiroshi Fujii, Tokyo, JP;
Masami Yajima, Saitama, JP;
Rieko Fujimura, Saitama, JP;
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07B / ; C07C / ;
U.S. Cl.
CPC ...
562401 ; 562402 ; 564303 ;
Abstract
(.+-.)-2-Amino-1-butanol and/or (.+-.)-mandelic acid are optically resolved with a high resolution efficiency and high optical purities by preferentially crystallizing out one of the pair of less soluble enantiomeric salts (or optical antipodes), namely (+)-2-amino-1-butanol-(+)-mandelic acid salt and (-)-2-amino-1-butanol-(-)-mandelic acid salt.