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:
May. 22, 2001
Filed:
Nov. 18, 1999
Applicant:
Inventors:
Edith Mathiowitz, Brookline, MA (US);
Donald Chickering, III, Pfulgerville, TX (US);
Yong S. Jong, Warwick, RI (US);
Jules S. Jacob, Taunton, MA (US);
Assignee:
Brown University Research Foundation, Providence, RI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 1/304 ; B01J 1/306 ;
U.S. Cl.
CPC ...
B01J 1/304 ; B01J 1/306 ;
Abstract
A process for preparing nanoparticles and microparticles is provided. The process involves forming a mixture of a polymer and a solvent, wherein the solvent is present in a continuous phase and introducing the mixture into an effective amount of a nonsolvent to cause the spontaneous formation of microparticles.