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:
Nov. 26, 2002
Filed:
Jan. 20, 1995
Applicant:
Inventors:
Raymond Cvetovich, Scotch Plains, NJ (US);
James A. McCauley, Belle Mead, NJ (US);
Richard Demchak, Langhorne, PA (US);
Richard J. Varsolona, Scotch Plains, NJ (US);
Assignee:
Merck & Co., Inc., Rahway, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 3/1352 ; A61K 3/1365 ; C07D / ;
U.S. Cl.
CPC ...
A61K 3/1352 ; A61K 3/1365 ; C07D / ;
Abstract
The most thermodynamically stable crystalline form of the benzoic acid salt of 4″-deoxy-4″-epi-methylamino avermectin B1a/B1b as the hemihydrate is obtained by crystallization from organic solvents containing a controlled amount of water.