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. 20, 2001
Filed:
Feb. 09, 2000
Applicant:
Inventors:
Theodore W. Randolph, Niwot, CO (US);
Corinne Lengsfeld, Denver, CO (US);
Richard Frank Falk, III, Bend, OR (US);
Assignee:
University Technology Corporation, Boulder, CO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 9/14 ;
U.S. Cl.
CPC ...
A61K 9/14 ;
Abstract
The present invention relates to the formation of microparticles from copolymers during a process involving precipitation with compressed antisolvents. The family of suitable copolymers have a semi-crystalline structure that above their glass transition temperature retain sufficient crystalline strength to form microparticles. The invention also provides systems comprising the microparticles encapsulated with a desired compound for the controlled release of the compound over a predetermined period of time.