US3354565A
Expired / Lapsed
US
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Passive information displays
Assignee: Texas Instruments Inc
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Filing: 1966-02-01
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Granted: 1967-11-28
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Expires: 1986-02-01
Abstract
No abstract record available.
Inventors
- 👤 Stephen P Emmons
- 👤 Jr Walter T Matzen
- 👤 Hilton W Spence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:10
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/02; H01C7/021; G; G09; G09F; G09F9/00; G09F9/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN AN INFORMATION DISPLAY OF THE TYPE UTILIZING A THERMAL DRIVE IN COOPERATIVE RELATIONSHIP WITH DISPLAY MATERIAL RESPONSIVE TO CHANGES IN TEMPERATURE, (A) AN ARRAY OF HEATING ELEMENTS UPON ONE SURFACE OF A SUBSTRATE, SELECT ONES OF SAID ELEMENTS DEFINING A FORM OF INFORMATION REPRESENTATION, (B) SAID HEATING ELEMENTS BEING FORMED OF A MATERIAL WHICH EXHIBITS A POSITIVE TEMPERATURE COEFFICIENT OF RESISTANCE, THEREBY TO LIMIT THE TEMPERATURE RISE OF SAID HEATING ELEMENTS.
Claim 2
Dependent Claim
72 words
IN AN INFORMATION DISPLAY OF THE TYPE UTILIZING A THERMAL DRIVE IN COOPERATIVE RELATIONSHIP WITH DISPLAY MATERIAL RESPONSIVE TO CHANGES IN TEMPERATURE, (A) AN ARRAY OF HEATING ELEMENTS UPON ONE SURFACE OF A SUBSTRATE, SELECT ONES OF SAID ELEMENTS DEFINING A FORM OF INFORMATION REPRESENTATION, (B) SAID HEATING ELEMENTS BEING FORMED OF A MATERIAL WHICH EXHIBITS A POSITIVE TEMPERATURE COEFFICIENT OF RESISTANCE, THEREBY TO LIMIT THE TEMPERATURE RISE OF SAID HEATING ELEMENTS.
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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |