US3786518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrosensitive recording materials
Assignee: Nig Mason Ltd
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Filing: 1972-09-22
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Granted: 1974-01-15
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Expires: 1992-09-22
Abstract
Abstract An electrosensitive recording material comprising a nonelectrically-conducting support having a substantially uniform matt surface on which has been vapour deposited a coating, devoid of any overcoat, of a metal having the property of volatilising when contacted by an electrically energized stylus, the characteristics of the matt surface and the amount of metal deposited on the support being such that a visible image of good definition is produced upon application to the material of a stylus energized by A.C.
Inventors
- 👤 D Atherton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:29
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/24; B41M5/245; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/259; Y10T428/27; Y10T428/273; Y10T428/277
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
16 words
A material as claimed in claim 1, wherein the base layer is a sheet of paper.
Claim 2
Dependent Claim
35 words
A material as claimed in claim 1, wherein the matting agent is silica of particle size 1 - 3 microns and present in an amount of 2 - 50 percent by weight of the resin.
Claim 3
Dependent Claim
33 words
A material as claimed in claim 1, wherein the matting agent is silica of particle size 7.5 microns and present in an amount of 2 - 70 percent by weight of the resin.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |