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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 11554520 B1

PDFFull Text
Date of Patent:
Jan. 17, 2023

Filed:

Aug. 21, 2020

Recycled pulp, absorbent, non-woven fabric, and sanitary article

Applicant:

Unicharm Corporation, Ehime, JP;

Inventors:

Takayoshi Konishi, Kagawa, JP;

Toshio Hiraoka, Kagawa, JP;

Assignee:

Unicharm Corporation, Ehime, JP;

Attorney:

Osha Bergman Watanabe & Burton LLP

Primary Examiner:

Jacob T Minskey

Int. Cl.
CPC ...
D21C 5/02 (2006.01); B29B 17/02 (2006.01); B09B 3/00 (2022.01); D21C 9/00 (2006.01); C08J 11/16 (2006.01); A61L 11/00 (2006.01); A61L 2/16 (2006.01); A61L 2/18 (2006.01); D21C 9/153 (2006.01); D21C 3/04 (2006.01); A61F 13/15 (2006.01); B29L 31/48 (2006.01);
U.S. Cl.
CPC ...
B29B 17/02 (2013.01); A61L 2/16 (2013.01); A61L 2/18 (2013.01); A61L 2/183 (2013.01); A61L 11/00 (2013.01); B09B 3/00 (2013.01); B09B 3/0075 (2013.01); C08J 11/16 (2013.01); D21C 3/04 (2013.01); D21C 5/02 (2013.01); D21C 9/00 (2013.01); D21C 9/153 (2013.01); A61F 13/15 (2013.01); B29B 2017/0289 (2013.01); B29L 2031/4878 (2013.01); Y02W 30/62 (2015.05); Y02W 30/64 (2015.05);
Abstract

Recycled pulp that derives from a used sanitary article includes an antibacterial activity value of 2.0 or more and an acid. Recycled pulp that derives from a used sanitary article includes an antibacterial activity value of 2.0 or more and an ash content of 0.65% by weight or less, and further includes an acid. The acid is a citric acid. The recycled pulp further includes a cationic antibacterial agent. The cationic antibacterial agent is a quaternary ammonium salt. The cationic antibacterial agent is a benzalkonium chloride or a cetylpyridinium chloride. At least a portion of the cationic antibacterial agent is adsorbed on the recycled pulp.

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