US3299433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reis electrosbnsitive recording
Assignee: —
•
Filing: 1964-10-21
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Granted: 1967-01-17
•
Expires: 1984-10-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:53
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/20; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31844
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
121 words
RECORDING APPARATUS COMPRISING: A NON-CONDUCTIVE BACKING MATERIAL; A CONDUCTIVE LAYER ON SAID BACKING MATERIAL; AN INSULATING FILM ON SAID CONDUCTIVE LAYER HAVING A PREDETERMINED DIELECTRIC AND THICKNESS TO PROVIDE A SELECTED VOLTAGE BREAKDOWN STRENGTH; AN ELECTRICALLY CONDUCTIVE SURFACE LAYER DISPOSED ON SAID INSULATING FILM AND INCLUDING A HEAT-SENSITIVE MATERIAL WHICH CHANGES COLOR AT ELEVATED TEMPERATURES; A SOURCE OF WRITING SIGNAL; AND AN ELECTRODE CONNECTED TO SAID SOURCE AND DISPOSED IN CONTACT WITH SAID SURFACE LAYER FOR APPLYING A WRITING SIGNAL THERETO; WHEREBY A WRITING SIGNAL IN EXCESS OF SAID VOLTAGE BREAKDOWN STRENGTH APPLIED TO SAID SURFACE LAYER PROVIDES CURRENT FLOW THERETHROUGH WITH SUFFICIENT CURRENT DENSITY TO ELEVATE THE TEMPERATURE OF LOCAL REGIONS THERE FOR PRODUCING A COLOR CHANGE IN SUCH REGIONS.
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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |