Signal input sheet
US5411790A · kind A · utility
7Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1993 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | Feb 26, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24917
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A signal input sheet having a cover film made of a soft material at its surface, its repetitive writing durability is improved to obtain a signal input sheet having a good feeling and writing condition, and a high durability. A hard film layer 18 harder than a sheet 10 and cover film 15 is set between the sheet 10 made of a soft material and the cover film 15 located at the upper side and slightly harder than the sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.