Cleaning sheet
US6726541B2 · kind B2 · utility
4Cited by
7References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 3, 2002 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Jun 3, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L13/16
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A cleaning sheet has a foamed sheet and a polishing layer with abrading particles on its surface. Mutually disconnected indentations are formed through the polishing layer reaching the foamed sheet in a uniform point pattern including a plurality of mutually adjacent ginkgo-leaf shaped figures for collecting cullet and dust particles therethrough into air bubbles opening on the upper surface of the foamed sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.