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:
Dec. 22, 2020
Filed:
Aug. 29, 2017
Applicant:
Aion Co., Ltd., Osaka, JP;
Inventors:
Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B08B 1/00 (2006.01); H01L 21/02 (2006.01); H01L 21/67 (2006.01); B08B 1/04 (2006.01); B08B 3/10 (2006.01); B08B 3/08 (2006.01); B08B 11/00 (2006.01); C08F 20/10 (2006.01);
U.S. Cl.
CPC ...
B08B 1/001 (2013.01); B08B 1/04 (2013.01); B08B 3/08 (2013.01); B08B 3/10 (2013.01); B08B 11/00 (2013.01); C08F 20/10 (2013.01); H01L 21/02057 (2013.01); H01L 21/02096 (2013.01); H01L 21/67046 (2013.01);
Abstract
A sponge roller is made of a polyvinyl acetal porous resin material having elasticity in a wet state, includes a roller in an approximate cylinder form and a plurality of protrusions formed integrally on an outer peripheral surface of the roller, and rotates the multiple protrusions to make contact with a surface to be cleaned so as to clean the surface. The polyvinyl acetal porous resin material constituting the sponge roller contains a cationic functional group.