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. 21, 2002
Filed:
Apr. 03, 2000
Applicant:
Inventors:
Seiji Sawai, Takarazuka, JP;
Kenji Nishiwaki, Kobe, JP;
Kazumi Ohtomo, Ibaraki, JP;
Akira Kagayama, Ikoma, JP;
Assignee:
Fujisawa Pharmaceutical Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 3/816 ; C07K 9/00 ; C07G 1/100 ;
U.S. Cl.
CPC ...
A61K 3/816 ; C07K 9/00 ; C07G 1/100 ;
Abstract
Process for producing a hydrochloride of a vancomycin antibiotic, comprising subjecting an aqueous solution of a hydrochloride of a vancomycin antibiotic to a primary freezing at from −1° C. to −20° C. for a time sufficient to grow ice crystals, to form a primarily frozen substance, then subjecting said primarily frozen substance to a secondary freezing at from −25° C. to −80° C. to form a completely frozen solid, and then drying the resulting frozen solid in vacuo; and product obtained by the process.