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US3097964A
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Dielectric recording medium
Assignee: Unisys Corp
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Filing: 1959-06-30
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Granted: 1963-07-16
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Expires: 1979-06-30
Abstract
No abstract record available.
Inventors
- 👤 Philip A Stowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:21
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/0202; G03G5/0205; G03G5/0208; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/254; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
61 words
A DIELECTRIC RECORDING MEDIUM COMPRISING A FLEXIBLE ABSORBENT BASE SHEET WHICH HAS ON ONE SIDE A SUBSTANTIALLY CONTINUOUS ELECTRIC-RETENTIVE COATING OF NON-HYGROSCOPIC DIELECTRIC MATERIAL, SAID COATING HAVING PARTIALLY EMBEDDED THEREIN DISCRETE SHARP PARTICLES OF AVERAGE SIZE OF THE ORDER OF LESS THAN A MICRON OF A SECOND ELECTRICCHARGE-RETENTIVE DIELECTRIC RESIN MATERIAL AND BEING PHYSICALLY HARDER THAN THE MATERIAL OF SAID COATING.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |