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:
Feb. 22, 2022
Filed:
Jan. 30, 2019
Applicant:
Nitto Denko Corporation, Ibaraki, JP;
Inventors:
Chie Matsumoto, Ibaraki, JP;
Tomohito Takita, Ibaraki, JP;
Kaiji Fujiwara, Ibaraki, JP;
Akinori Sugiyama, Ibaraki, JP;
Tomoya Tanaka, Ibaraki, JP;
Assignee:
NITTO DENKO CORPORATION, Ibaraki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 9/70 (2006.01); A61K 47/12 (2006.01); A61K 47/18 (2017.01); A61K 47/36 (2006.01); A61K 47/32 (2006.01); A61K 47/38 (2006.01); A61K 31/197 (2006.01);
U.S. Cl.
CPC ...
A61K 9/7084 (2013.01); A61K 9/7023 (2013.01); A61K 31/197 (2013.01); A61K 47/12 (2013.01); A61K 47/18 (2013.01); A61K 47/32 (2013.01); A61K 47/36 (2013.01); A61K 47/38 (2013.01);
Abstract
Provided is a transdermal absorption preparation having superior drug skin permeability, which can uniformly disperse the drug in the preparation and maintain the uniform dispersion state of the drug. A transdermal absorption preparation having a plaster layer containing a drug, a polymer and a pH adjuster, in which the aforementioned polymer contains a polymer having a particular glass transition temperature of 30° C.-200° C., and the surface of the plaster layer has a pH of 6.7-10.0.