logo

For the Inventor, By the Inventor

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 11696975 B1

PDFFull Text
Date of Patent:
Jul. 11, 2023

Filed:

Sep. 22, 2017

Hydrogel

Applicant:

Sekisui Plastics Co., Ltd., Osaka, JP;

Inventors:

Ryo Iizuka, Ibaraki, JP;

Kazuki Kato, Ibaraki, JP;

Assignee:

SEKISUI PLASTICS CO., LTD., Osaka, JP;

Attorney:

Greenblum & Bernstein, P.L.C.

Primary Examiner:

Ramsey Zacharia

Int. Cl.
CPC ...
A61L 31/14 (2006.01); A61L 31/04 (2006.01); B32B 27/18 (2006.01); B32B 27/30 (2006.01); C08F 222/38 (2006.01); C08J 3/075 (2006.01); C09J 7/30 (2018.01); C09J 11/04 (2006.01); C09J 11/06 (2006.01); A61B 5/259 (2021.01); A61B 5/296 (2021.01); A61B 5/398 (2021.01); A61B 18/16 (2006.01); A61B 18/00 (2006.01); A61N 1/04 (2006.01); A61B 5/291 (2021.01);
U.S. Cl.
CPC ...
A61L 31/145 (2013.01); A61L 31/041 (2013.01); B32B 27/18 (2013.01); B32B 27/306 (2013.01); C08F 222/385 (2013.01); C08J 3/075 (2013.01); C09J 7/30 (2018.01); C09J 11/04 (2013.01); C09J 11/06 (2013.01); A61B 5/259 (2021.01); A61B 5/291 (2021.01); A61B 5/296 (2021.01); A61B 5/398 (2021.01); A61B 18/16 (2013.01); A61B 2018/00601 (2013.01); A61B 2562/0215 (2017.08); A61B 2562/0217 (2017.08); A61N 1/0428 (2013.01); A61N 1/0456 (2013.01); C08J 2335/00 (2013.01); C08J 2435/00 (2013.01);
Abstract

A hydrogelhaving a laminate structure of layer Aand layer B, wherein layer Acontains a monomer-derived component, water, a humectant, a water-insoluble polymer having tackiness and an amphiphilic polymer, the water-insoluble polymer is contained in a proportion of 3 to 20 wt % based on a total amount of layer A, and the amphiphilic polymer is a polyvinyl alcohol having a saponification degree of 50 to 75% and is contained in a proportion of 0.05 to 5 wt % based on the total amount of layer A; layer Bcontains a monomer-derived component, water and a humectant and is substantially free of a water-insoluble polymer having tackiness and a polyvinyl alcohol; and an amount of the water based on a total amount of layer B is the amount of water based on the total amount of layer A±10 wt %.

Find Patent Forward Citations

Loading…