US3152969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductolithography employing hydrophobic images
Assignee: Eastman Kodak Co
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Filing: 1960-07-28
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Granted: 1964-10-13
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Expires: 1980-07-28
Abstract
No abstract record available.
Inventors
- 👤 Donald R Eastman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:20
CPC Classifications
G; G03; G03G; G03G17/00; G03G17/02; G03G13/00; G03G13/26; G03G13/28; G03G13/32; G03G5/00; G03G5/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN THE PROCESS OF PRODUCING A LITOGRAPHIC PLATE BY PHOTOCONDUCTOLITHOGRAPHY, THE STEPS COMPRISING: RENDERING A SURFACE OF A LAYER OF PHOTOCONDUCTIVE ZINC OXIDE IN RESIN HYDROPHILIC, THEN FORMING AN IMAGE PATTERN OF VARIATIONS IN ELECTRICAL CONDUCTIVITY ACROSS THE SAID SURFACE OF THE LAYER, AND THEN ELECTROLYTICALLY CATHODICALLY DEPOSITING ON THE SAID SURFACE OF THE LAYER A HYDROPHOBIC IMAGE DISTRIBUTED IN ACCORDANCE WITH THE VARIATINS OF ELECTRICAL CONDUCTIVITY TO FORM THE PLATE.
Claim 2
Dependent Claim
71 words
IN THE PROCESS OF PRODUCING A LITOGRAPHIC PLATE BY PHOTOCONDUCTOLITHOGRAPHY, THE STEPS COMPRISING: RENDERING A SURFACE OF A LAYER OF PHOTOCONDUCTIVE ZINC OXIDE IN RESIN HYDROPHILIC, THEN FORMING AN IMAGE PATTERN OF VARIATIONS IN ELECTRICAL CONDUCTIVITY ACROSS THE SAID SURFACE OF THE LAYER, AND THEN ELECTROLYTICALLY CATHODICALLY DEPOSITING ON THE SAID SURFACE OF THE LAYER A HYDROPHOBIC IMAGE DISTRIBUTED IN ACCORDANCE WITH THE VARIATINS OF ELECTRICAL CONDUCTIVITY TO FORM THE PLATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |