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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 12679913 B1

PDFFull Text
Date of Patent:
Jul. 14, 2026

Filed:

Mar. 07, 2022

Poly(vinyl alcohol) resin

Applicant:

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

Inventors:

Yuki Ishikawa, Osaka, JP;

Masumi Fujita, Osaka, JP;

Shizuka Sugihara, Osaka, JP;

Assignee:

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

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Rip A Lee

Int. Cl.
CPC ...
C08F 216/06 (2006.01); C08F 218/08 (2006.01); C08L 29/04 (2006.01); C08F 8/12 (2006.01); C08F 8/14 (2006.01); C08F 8/16 (2006.01);
U.S. Cl.
CPC ...
C08F 216/06 (2013.01); C08L 29/04 (2013.01); C08F 8/12 (2013.01); C08F 8/14 (2013.01); C08F 8/16 (2013.01); C08F 218/08 (2013.01);
Abstract

The present invention provides a polyvinyl alcohol resin with which a polyvinyl acetal resin having a controlled particle size and forming less lumps during dissolution to exhibit excellent solubility can be produced. Provided is a polyvinyl alcohol resin containing: methyl acetate; a vinyl alcohol unit; and a vinyl acetate unit, the methyl acetate being contained in an amount of 0.05 to 3% by weight, the vinyl alcohol unit being contained in an amount of 80 to 99.5 mol %, the vinyl acetate unit having a mean chain length Lof 1 to 4.5, the vinyl alcohol unit having a mean chain length Lof 1 to 30.

Find Patent Forward Citations

Ishikawa, Yuki. (2026). Poly(vinyl alcohol) resin (U.S. Patent No. 12679913). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12679913

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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