US3212931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatographic recording medium and a method of making the same
Assignee: NTT Inc
•
Filing: 1962-05-28
•
Granted: 1965-10-19
•
Expires: 1982-05-28
Abstract
No abstract record available.
Inventors
- 👤 Kubota Keijiro
- 👤 Ohta Hisa
- 👤 Okajima Yoshitaro
- 👤 Kineri Seizo
- 👤 Harasaki Yuji
- 👤 Kirigaya Kiichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:56
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/0202; G03G5/0205; G03G5/10; G03G5/101; Y; Y10; Y10S; Y10S101/00; Y10S101/37; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31667
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN AN ELECTROSTATOGRAPHIC RECORDING MEDIUM WHEREIN AN ELECTROSTATOGRAPHIC CHARGE PATTERN IS FORMED DIRECTLY BY THE APPLICATION OF AN ELECTRIC FIELD, THE IMPROVEMENT WHEREIN THE RECORDING MEDIUM COMPRISES A BACKING BASE CONSISTING OF PAPER, A PATTERN SUPPORTING LAYER CONSISTING OF A RESINOUS DIELECTRIC SUBSTANCE ADAPTED TO SUPPORT AN ELECTROSTATOGRAPHIC IMAGE AND AN INTERMEDIATE LAYER OF LOW ELECTRICAL RESISTANCE INTERPOSED BETWEEN SAID BACKING BASE AND SAID PATTERN SUPPORTING LAYER, SAID INTERMEDIATE LAYER BEING FORMED FROM THE SALT OF A HIGHLY POLYMERIZED ELECTROLYTE TAKEN FROM THE GROUP CONSISTING OF SODIUM ALGINATE AND AMMONIUM POLYACRYLATE.
Claim 2
Dependent Claim
91 words
IN AN ELECTROSTATOGRAPHIC RECORDING MEDIUM WHEREIN AN ELECTROSTATOGRAPHIC CHARGE PATTERN IS FORMED DIRECTLY BY THE APPLICATION OF AN ELECTRIC FIELD, THE IMPROVEMENT WHEREIN THE RECORDING MEDIUM COMPRISES A BACKING BASE CONSISTING OF PAPER, A PATTERN SUPPORTING LAYER CONSISTING OF A RESINOUS DIELECTRIC SUBSTANCE ADAPTED TO SUPPORT AN ELECTROSTATOGRAPHIC IMAGE AND AN INTERMEDIATE LAYER OF LOW ELECTRICAL RESISTANCE INTERPOSED BETWEEN SAID BACKING BASE AND SAID PATTERN SUPPORTING LAYER, SAID INTERMEDIATE LAYER BEING FORMED FROM THE SALT OF A HIGHLY POLYMERIZED ELECTROLYTE TAKEN FROM THE GROUP CONSISTING OF SODIUM ALGINATE AND AMMONIUM POLYACRYLATE.
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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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |