IP Library › Granted Patent US 10,123,977
Granted Patent B2
US 10,123,977 · App. 14/974,288 · Granted Nov 13, 2018

Gel patch

Inventors: Keiichiro Tsurushima (Tosu, JP); Yasuhisa Kose (Tosu, JP); Takaaki Yoshinaga (Tosu, JP)
Assignee: HISAMITSU PHARMACEUTICAL CO., INC.
A61K9/7061A61K31/618A61K47/14A61K47/26
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Quick Facts
Patent No.
US 10,123,977
App. No.
14/974,288
Granted
Nov 13, 2018
Kind
B2
Abstract

A gel patch includes a base fabric, an adhesive layer, and a release liner in this order, wherein the adhesive layer contains a physiologically active substance, a water-soluble (meth)acrylic polymer, water, a surfactant, and poly(methyl acrylate/2-ethylhexyl acrylate), and the surfactant comprises a polyethylene glycol fatty acid ester or a polyoxyethylene sorbitan fatty acid ester.

Claims (6)

1. A gel patch comprising a base fabric, an adhesive layer, and a release liner in this order, wherein

the adhesive layer contains a physiologically active substance, a water-soluble (meth)acrylic polymer, water, a surfactant comprising polyethylene glycol monostearic acid ester, and poly(methyl acrylate/2-ethylhexyl acrylate).

2. The gel patch according to claim 1 , wherein the poly(methyl acrylate/2-ethylhexyl acrylate) is obtained from a poly(methyl acrylate/2-ethylhexyl acrylate) emulsion source material.

3. The gel patch according to claim 1 , wherein the water-soluble (meth)acrylic polymer comprises polyacrylic acid or a neutralized product of polyacrylic acid.

4. The gel patch according to claim 1 , further comprising at least one moisturizing agent selected from gelatin, sorbitol and glycerin.

5. The gel patch according to claim 1 , further comprising at least one solubilizing agent comprising polyvinyl alcohol.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 21, 2015
From: TSURUSHIMA, KEIICHIRO; KOSE, YASUHISA; YOSHINAGA, TAKAAKI
To: HISAMITSU PHARMACEUTICAL CO., INC.
Reel/Frame 037342/0176 →
Priority Claims (2)
JP 2014-258879 · Dec 22, 2014 · national
JP 2015-178693 · Sep 10, 2015 · national
Continuity (1)
Related Publication 20160175262A1 · Jun 23, 2016