Patent US2536745A successfully refreshed from Google Patents.
US3132584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planographic master-forming blank and method of manufacture thereof
Assignee: Timefax Corp
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Filing: 1954-07-26
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Granted: 1964-05-12
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Expires: 1974-07-26
Abstract
No abstract record available.
Inventors
- 👤 Harold R Dalton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:59
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/03; B41N1/00; B41N1/12; B41N1/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
AN ELECTRICALLY INSCRIBABLE LITHOGRAPHIC PRINTING PLATE COMPRISING A WET-STRENGTH PAPER BASE HAVING AN ELECTRICALLY CONDUCTIVE AND OLEOPHILIC COATING ADHERED THERETO, SAID OLEOPHILIC COATING CONTAINING ELECTRICALLY CONDUCTIVE CARBON AND A BINDER AT THE ESSENTIAL INGREDIENTS THEREOF, AND, ON THE SIDE OLEPHOLIC COATNG, AND ADHERENT, WATER INSOLUBLE,HYDROPHILIC COATING CONTAINING, AS THE ESSENTIAL INGREDIENTS THEREOF, A HYDROPHILIC COLLOID, AND INSOLUBILIZING AGENT FOR THE SAID COLLOID AND ZINC SULFIDE AS A PIGMENT; THE HYDROPHILIC COATING BEING REMOVABLE BY AND THE OLEOPHILIC COATING NOT BEING REMOVABLE DURING THE INSCRIBING OF THE LITHOGRAPHIC PRINTING PLATE BY AN ELECTRIC CURRENT.
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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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |