Cleaning sponge and cleaning method
US10870132B2 · kind B2 · utility
0Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2017 |
| Grant date | Dec 22, 2020 |
| Priority date | — |
| Expiry date | Nov 11, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB08B1/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.