US3097964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric recording medium
Assignee: Unisys Corp
•
Filing: 1959-06-30
•
Granted: 1963-07-16
•
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 08:56
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)
US2281602A
Cited
US2452235A
Cited
US2706936A
Cited
US2522351A
Cited
US2697434A
Cited
US2919170A
Cited
US2862834A
Cited
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 |