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. 04, 2001
Filed:
Dec. 03, 1999
Applicant:
Inventor:
David A. Vanzin, Franklin, TN (US);
Assignee:
Avecia, Inc., Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 9/20 ; A61K 9/14 ; A01N 4/366 ;
U.S. Cl.
CPC ...
A61K 9/20 ; A61K 9/14 ; A01N 4/366 ;
Abstract
Phenothiazine and its derivatives products are provided with a minimal level of fines or dust as a result of forming such products in prill form. The prills are generally spherical. Also provided is a method for reducing the level of powder in phenothiazine product which includes forming the phenothiazine product in prill form such that the prills have a generally spherical shape. The prill product achieves improved handling, flowability and dissolution times, while minimizing the generation of phenothiazine fines and dust, and the problems associated with worker exposure, irritation and sensitization to such fines and dust.