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. 13, 2005
Filed:
Jan. 31, 2003
Applicant:
Markus Sauter, Gensingen, DE;
Inventor:
Markus Sauter, Gensingen, DE;
Assignee:
Boehringer Ingelheim Pharma GmbH & Co. KG, Ingelheim, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07J053/00 ;
U.S. Cl.
CPC ...
Abstract
The invention relates to an improved process for obtaining highly pure, crystalline betulinic acid from a methanolic extract of ground plane tree cortex and/or plane tree bark, as well as highly pure crystalline betulinic acid which is solvated with one equivalent of ethanol.