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. 21, 2023
Filed:
Oct. 29, 2020
Applicant:
Evonik Operations Gmbh, Essen, DE;
Inventors:
Assignee:
Evonik Operations GmbH, Essen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 9/16 (2006.01); A61K 31/41 (2006.01); A61K 31/536 (2006.01); A61K 31/635 (2006.01); A61K 31/045 (2006.01); A61K 31/4184 (2006.01); A61K 31/496 (2006.01);
U.S. Cl.
CPC ...
A61K 9/1694 (2013.01); A61K 9/1635 (2013.01); A61K 31/045 (2013.01); A61K 31/41 (2013.01); A61K 31/4184 (2013.01); A61K 31/496 (2013.01); A61K 31/536 (2013.01); A61K 31/635 (2013.01);
Abstract
A process can be used for preparing nano- or microparticles containing a carrier-polymer and a biologically active ingredient. The process is a solvent emulsion process involving an organic phase (OP) and an aqueous phase (AP) to form an emulsion. In the case of an oil-in-water emulsion (O/W), the organic phase (OP) contains the biologically active ingredient dissolved or dispersed therein. Alternatively, in the case of a water-in-oil emulsion (W/O), the aqueous phase (AP) contains the biologically active ingredient dissolved or dispersed therein. The organic phase (OP) is saturated with the salt-containing aqueous phase (AP) and vice versa.