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. 20, 1994
Filed:
Jan. 28, 1993
Applicant:
Inventor:
Antonio Bonaldi, Chiuduno, IT;
Assignee:
Erregierre Industria Chimica S.p.A., S. Paola D'Argon, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
552551 ;
Abstract
Process for pharmaceutical grade high purity hyodeoxycholic acid preparation starting from swine bile, consisting in the treatment of swine bile with sodium hydroxide, isolation of hyodeoxycholic, chenodeoxycholic and hyocholic acids by precipiation of their zinc salts and subsequent selective precipitation of the hyodeoxycholic acid magnesium salt, from which the acid is freed by acidification and then crystallized.