Erasable reproduction material
US5102730A · kind A · utility
2Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1990 |
| Grant date | Apr 7, 1992 |
| Priority date | — |
| Expiry date | Feb 20, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31993
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Written, typed, penciled, inked, xerographic and other markings on foils, opaque and transparent papers can be erased easily by mechanical means by utilizing an interlayer of alkylketene dimer with hydrophilic colloids and pigments. The provisions of such an interlayer is useful for drafting materials, xerographic and diazotype copies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.