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. 09, 2004
Filed:
Dec. 05, 2001
Applicant:
Inventor:
Royal J. Haskell, Kalamazoo, MI (US);
Assignee:
Pharmacia & Upjohn Company, Kalamazoo, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B02C 1/912 ;
U.S. Cl.
CPC ...
B02C 1/912 ;
Abstract
There is provided a process for reducing particle size of a drug, the process comprising (a) a step of dispersing about 10 g or less of the drug in a suitable volume of a liquid dispersion medium to form a suspension; (b) a step of bringing together in a vessel grinding media, magnetically activatable means for stirring and the suspension; (c) a step of magnetically activating the means for stirring to effect milling of the suspension to a weight average particle size not greater than about 1 &mgr;m; and (d) a step of separating the resulting milled suspension from the grinding media and the magnetically activatable means for stirring.