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. 23, 2003
Filed:
Nov. 20, 2001
Applicant:
Inventors:
Royden M. Coe, Bordentown, NJ (US);
Robert L. Thies, Vancouver, British Columbia, CA;
Joel B. Portnoff, Richboro, PA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 1/320 ; A61K 9/127 ; A61K 9/133 ;
U.S. Cl.
CPC ...
B01J 1/320 ; A61K 9/127 ; A61K 9/133 ;
Abstract
A method of sizing liposomes by passing a suspension of liposomes through an aluminum oxide porous film by entering the film via the smaller pores and extruded via the larger pores, under pressure, is disclosed. In a preferred embodiment, the porous film is a branched-pore type anodic aluminum oxide porous film. The process produces a population of liposomes substantially free of liposomes above a predetermined maximum size. Also disclosed is an apparatus for carrying out the invention.