US3764313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrographic field electrode
Assignee: 3M Co
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Filing: 1969-04-29
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Granted: 1973-10-09
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Expires: 1989-04-29
Abstract
Abstract A MULTILAYERED SHEET CONSTRUCTION FOR USE IN A DYNAMIC ELECTROGRAPHIC PROCESS AS THE ULTIMATE COPY OR AS AN INTERMEDIATE FOR PREPARING COPIES, SUCH SHEET HAVING AN IMAGE LAYER CAPABLE OF PROVIDING A DIFFERENTIALLY CONDUCTIVE IMAGE PATTERN WHICH IS DEVELOPABLE BY CONDUCTIVE PARTICULATE UNDER A DEVELOPMENT VOLTAGE, A DIELECTRIC LAYER BONDED TO THE IMAGE LAYER WHICH IS OF A THICKNESS AND CONDUCTIVITY WHEREBY CHARGE FLOW THROUGH THE CONDUCTIVE REGIONS OF IMAGE LAYER IS CONTROLLED TO REDUCE POWDER DEPOSITION IN BACKGROUND AREAS, AND A CONDUCTIVE LAYER BONDED TO THE DIELECTRIC LAYER.
Inventors
- 👤 B Shely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:21
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/75; G03G15/758; G03G13/00; G03G13/22; G03G13/26; G03G13/28; G03G17/00; G03G17/02; G03G5/00; G03G5/02; G03G5/026; G03G5/028; G03G5/04; G03G5/08; G03G5/087; G03G5/10; G03G5/14; G03G9/00; G03G9/08; Y; Y10; Y10S; Y10S430/00; Y10S430/001; Y10S430/102
Claims Analysis
Total Claims: 0
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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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |