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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.:

US 9249266 B1

PDFFull Text
Date of Patent:
Feb. 02, 2016

Filed:

Apr. 01, 2011

Supercritical fluid treatment of high molecular weight biopolymers

Applicants:

Feral Temelli, Edmonton, CA;

Bernhard Seifried, Edmonton, CA;

Inventors:

Feral Temelli, Edmonton, CA;

Bernhard Seifried, Edmonton, CA;

Assignee:

THE GOVERNORS OF THE UNIVERSITY OF ALBERTA, Edmonton, Alberta, CA;

Attorney:

Bennett Jones LLP

Primary Examiner:

Leszek Kiliman

Int. Cl.
CPC ...
C08J 3/12 (2006.01); A61K 9/50 (2006.01); A61K 9/51 (2006.01); C08J 3/215 (2006.01); B29B 9/12 (2006.01);
U.S. Cl.
CPC ...
C08J 3/12 (2013.01); A61K 9/5089 (2013.01); A61K 9/5192 (2013.01); B29B 9/12 (2013.01); C08J 3/122 (2013.01); C08J 3/215 (2013.01); C08J 2305/00 (2013.01); Y02P 20/544 (2015.11); Y10T 428/2982 (2015.01);
Abstract

Micro- and nano-sized particles, agglomerates and fibers are generated from high molecular weight water-soluble biopolymers applying supercritical fluid technology. A method of producing micro- or nanoparticles from an aqueous solution of a high molecular weight biopolymer includes the step of spraying the aqueous solution together with a mixture of a compressible gas and a water-soluble co-solvent/antisolvent into a pressurized chamber. The method may be adapted to impregnate the micro- or nanoparticles with a bioactive material. A method for microencapsulating a bioactive material with a biopolymer is also provided.

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Temelli, Feral. (2016). Supercritical fluid treatment of high molecular weight biopolymers (U.S. Patent No. 9249266). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9249266

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