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:
Dec. 04, 2001
Filed:
Jun. 19, 1998
Applicant:
Inventors:
Lars Schoenfeldt, Snekkersten, DK;
Peter Sylvest Nielsen, Værløse, DK;
Assignee:
Colorplast A/S, Humlebek, DK;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 9/14 ; A61K 4/730 ;
U.S. Cl.
CPC ...
A61K 9/14 ; A61K 4/730 ;
Abstract
A method for preparing a non-fibrous porous material essentially consisting of one or more hydrophilic polymers and/or pharmaceutical medicaments comprising forming an aqueous solution, sol or gel comprising one or more hydrophilic polymers and/or pharmaceutical medicaments, freezing the solution, sol or gel and extracting the frozen water selectively using a hydrophilic organic solvent being miscible with water at a temperature below 5° C. at which temperature the solvent is not able to dissolve the frozen solutes, leaving the non-fibrous material in a solid, porous form.