Paper containing a filler
US5591307A · kind A · utility
1Cited by
15References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 31, 1995 |
| Grant date | Jan 7, 1997 |
| Priority date | — |
| Expiry date | May 31, 2015 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/68
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Paper containing a filler which is synthetic silica, which can be precipitated, spray-dried and ground. The synthetic silica reduces show through.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.