Patent US5146197A successfully refreshed from Google Patents.
Patent US172956A successfully refreshed from Google Patents.
Patent US3276031A successfully refreshed from Google Patents.
US3276031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic information recording utilizing electrets
Assignee: General Electric Co
•
Filing: 1963-01-14
•
Granted: 1966-09-27
•
Expires: 1983-01-14
Abstract
No abstract record available.
Inventors
- 👤 Gaynor Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:46
CPC Classifications
H; H01; H01G; H01G7/00; H01G7/02; H01G7/021; H01G7/023; G; G03; G03G; G03G16/00; G03G5/00; G03G5/02; G03G5/022; G03G5/024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A METHOD FOR RECORDING INFORMATION IN THE FORM OF LIGHT-MODIFYING DEFORMATIONS ON THE SURFACE OF A RECORDING MEMBER WHICH COMPRISES SELECTIVELY NEUTRALIZING A SUPPORTED VOLUME-POLARIZED THERMOPLASTIC ELECTRET LAYER IN AN IMAGE PATTERN OF THE INFORMATION BEING RECORDED, AND HEATING THE SELECTIVELY NEUTRALIZED ELECTRET LAYER TO PRODUCE DEFORMATIONS CORRESPONDING TO THE IMAGE PATTERN.
Claim 2
Independent Claim
52 words
A METHOD FOR RECORDING INFORMATION IN THE FORM OF LIGHT-MODIFYING DEFORMATIONS ON THE SURFACE OF A RECORDING MEMBER WHICH COMPRISES SELECTIVELY NEUTRALIZING A SUPPORTED VOLUME-POLARIZED THERMOPLASTIC ELECTRET LAYER IN AN IMAGE PATTERN OF THE INFORMATION BEING RECORDED, AND HEATING THE SELECTIVELY NEUTRALIZED ELECTRET LAYER TO PRODUCE DEFORMATIONS CORRESPONDING TO THE IMAGE PATTERN.
References Cited (Backward Citations)
US1891780A
Cited
US2698928A
Cited
US2775650A
Cited
US3000735A
Cited
US3066298A
Cited
US2985866A
Cited
US3055006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |