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:
Jun. 25, 2024
Filed:
Sep. 09, 2019
Composition for patch preparation comprising drug, organic solvent, lipophilic mass base, and powder
Applicant:
Medrx Co., Ltd., Kagawa, JP;
Inventors:
Assignee:
MEDRX CO., LTD., Kagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 47/18 (2017.01); A61K 9/70 (2006.01); A61K 31/165 (2006.01); A61K 31/167 (2006.01); A61K 31/407 (2006.01); A61K 31/485 (2006.01); A61K 31/7088 (2006.01); A61K 38/23 (2006.01); A61K 47/14 (2017.01); A61K 47/32 (2006.01); A61K 47/38 (2006.01);
U.S. Cl.
CPC ...
A61K 47/18 (2013.01); A61K 9/7053 (2013.01); A61K 31/165 (2013.01); A61K 31/167 (2013.01); A61K 31/407 (2013.01); A61K 31/485 (2013.01); A61K 31/7088 (2013.01); A61K 38/23 (2013.01); A61K 47/14 (2013.01); A61K 47/32 (2013.01); A61K 47/38 (2013.01);
Abstract
A non-aqueous patch preparation may include a drug solution in which a drug is dissolved in an organic solvent, a lipophilic mass base, and anhydrous silicic acid powders that are insoluble both in the organic solvent and in the lipophilic mass base. The organic solvent is selected from the group consisting of propylene glycol, 1,3-butanediol, polyethylene glycol, and propylene carbonate. The lipophilic mass base comprises an elastomer, a tackifier, and a softening agent wherein the elastomer is styrene-isoprene-styrene copolymer (SIS). The patch preparation has 2% to 10% by weight of the anhydrous silicic acid powders.