Patent US2844434A successfully refreshed from Google Patents.
US3256089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Masked plate xerography
Assignee: Xerox Corp
•
Filing: 1964-03-02
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Granted: 1966-06-14
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Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 Harold E Clark
- 👤 Robert W Gundlach
- 👤 Levy Mortimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:18
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/75; G03G15/758
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A XEROGRAPHIC PLATE COMPRISING AN ELECTRICALLY CONDUCTIVE TRANSPARENT SUPPORT LAYER, A LAYER OF PHOTOCONDUCTIVE INSULATING MATERIAL COATED THEREOVER, AND COATED OVER SAID LAYER OF PHOTOCONDUCTIVE INSULATING MATERIAL A LAYER OPAQUE TO ACTIVATING RADIATION FOR SAID PHOTOCONDUCTIVE INSULATING MATERIAL.
Claim 2
Dependent Claim
38 words
A XEROGRAPHIC PLATE COMPRISING AN ELECTRICALLY CONDUCTIVE TRANSPARENT SUPPORT LAYER, A LAYER OF PHOTOCONDUCTIVE INSULATING MATERIAL COATED THEREOVER, AND COATED OVER SAID LAYER OF PHOTOCONDUCTIVE INSULATING MATERIAL A LAYER OPAQUE TO ACTIVATING RADIATION FOR SAID PHOTOCONDUCTIVE INSULATING MATERIAL.
References Cited (Backward Citations)
US2901348A
Cited
US3124456A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |