Patent US3210184A successfully refreshed from Google Patents.
US3210184A
Expired / Lapsed
US
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Planographic printing plates having a bohmite oxide interlayer and process for producing same
Assignee: Azoplate Corp
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Filing: 1960-12-27
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Granted: 1965-10-05
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Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 Uhlig Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:27
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/26; G03G13/28; B; B41; B41N; B41N1/00; B41N1/04; B41N1/08; B41N1/083; B41N3/00; B41N3/03; B41N3/034; C; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/06; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/087; G03G5/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
52 words
A PROCESS FOR MAKING A PRINTING PLATE WHICH COMPRISES EXPOSING AN ELECTROSTATICALLY CHARGED LIGHTMODIFIABLE REPRODUCTION COATING, SUPPORTED ON AN ALUMINUM BASE HAVING A BOHMITE OXIDE LAYER OF THE FORMULA AL2O3.H2O THEREON, TO LIGHT UNDER A MASTER, DEVELOPING THE RESULTING IMAGE WITH AN ELECTROSCOPIC MATERIAL, FIXING THE IMAGE, AND HYDROPHILIZING THE NON-IMAGE AREAS.
Claim 2
Dependent Claim
52 words
A PROCESS FOR MAKING A PRINTING PLATE WHICH COMPRISES EXPOSING AN ELECTROSTATICALLY CHARGED LIGHTMODIFIABLE REPRODUCTION COATING, SUPPORTED ON AN ALUMINUM BASE HAVING A BOHMITE OXIDE LAYER OF THE FORMULA AL2O3.H2O THEREON, TO LIGHT UNDER A MASTER, DEVELOPING THE RESULTING IMAGE WITH AN ELECTROSCOPIC MATERIAL, FIXING THE IMAGE, AND HYDROPHILIZING THE NON-IMAGE AREAS.
Claim 3
Dependent Claim
15 words
A PROCESS ACCORDING TO CLAIM 10 IN WHICH THE REPRODUCTION COATING INCLUDES AN ORGANIC PHOTOCONDUCTOR.
References Cited (Backward Citations)
US2696435A
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GB748340A
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US2716061A
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US2859148A
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US2995442A
Cited
US2994609A
Cited
US2958599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |