US3239841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medium for combined thermoplastic and magnetic recording
Assignee: General Electric Co
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Filing: 1962-10-16
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Granted: 1966-03-08
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Expires: 1982-10-16
Abstract
No abstract record available.
Inventors
- 👤 Jr John L Henkes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:52
CPC Classifications
G; G11; G11B; G11B13/00; G11B13/04; H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/7805; H04N5/782; H04N5/80; H04N5/82; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31786
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A RECORDING MEDIUM COMPRISING AN ELONGATED TAPE HAVING A FIRST SURFACE WITH THERMOPLASTIC MATERIAL ADAPTED TO FORM DEFORMATIONS IN RESPONSE TO AN ELECTROSTATICALLY RECORDED CHARGE PATTERN AND HEAT SUFFICIENT FOR AT LEAST SOFTENING THE THERMOPLASTIC MATERIAL, AND AN OPTICALLY SMOOTH REFLECTING LAYER ON THE UNDERSIDE OF SAID THERMOPLASTIC MATERIAL OPPOSITE FROM SAID DEFORMATIONS AND SUBSTANTIALLY ACROSS THE TRANSVERSE DIMENSION OF SAID MEDI-
Claim 2
Dependent Claim
62 words
A RECORDING MEDIUM COMPRISING AN ELONGATED TAPE HAVING A FIRST SURFACE WITH THERMOPLASTIC MATERIAL ADAPTED TO FORM DEFORMATIONS IN RESPONSE TO AN ELECTROSTATICALLY RECORDED CHARGE PATTERN AND HEAT SUFFICIENT FOR AT LEAST SOFTENING THE THERMOPLASTIC MATERIAL, AND AN OPTICALLY SMOOTH REFLECTING LAYER ON THE UNDERSIDE OF SAID THERMOPLASTIC MATERIAL OPPOSITE FROM SAID DEFORMATIONS AND SUBSTANTIALLY ACROSS THE TRANSVERSE DIMENSION OF SAID MEDI-
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |