Base material for wiping sheet
US7094462B1 · kind B1 · utility
6Cited by
20References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2000 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | Mar 31, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/699
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A base material for a wiping sheet on which powder is to be supported, wherein the ratio of the average pore diameter (D) of the surface of the base material while dry as measured by the mercury penetration method to the average particle diameter (d) of the powder, D/d, ranges from 0.03 to 30, and the base material while dry has a bulk softness of from 0.1 to 5 N/30 mm and a thickness of from 0.3 to 5 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.