Patent US3131630A successfully refreshed from Google Patents.
US3131630A
Expired / Lapsed
US
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Planographic printing plates
Assignee: NRG Manufacturing Ltd
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Filing: 1960-06-03
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Granted: 1964-05-05
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Expires: 1980-06-03
Abstract
No abstract record available.
Inventors
- 👤 Spencer Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:39
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/03; B41N3/036; C; C08; C08K; C08K3/00; C08K3/34; C08K3/346; C08K5/00; C08K5/04; C08K5/09; C09; C09D; C09D101/00; C09D101/08; C09D101/26; C09D101/28; C09D101/286; C09D129/00; C09D129/02; C09D129/04; C09D189/00; C09D189/005; D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/52; B41C; B41C1/00; B41C1/10; B41C1/1091
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR THE PRODUCTION OF A PLANOGRAPHIC PRINTING PLATE WHICH COMPRISES APPLYING TO A SUPPORT SHEET A LAYER OF A COATING COMPOSITION COMPRISING (A) A SOLUBLE COMPLEX FORMED OF AN ACID-SOLUBLE HYDROPHILIC COLLOID, AT LEAST ONE MULTIVALENT METAL SALT AND AT LEAST ONE VOLATILE ACID, (B) A FILLER, AND (C) A CHROMATE HARDENING AGENT FOR THE HYDROPHILIC COLLOID, THE PH OF THE COMPOSITION BEING BELOW 7.
Claim 2
Dependent Claim
67 words
A PROCESS FOR THE PRODUCTION OF A PLANOGRAPHIC PRINTING PLATE WHICH COMPRISES APPLYING TO A SUPPORT SHEET A LAYER OF A COATING COMPOSITION COMPRISING (A) A SOLUBLE COMPLEX FORMED OF AN ACID-SOLUBLE HYDROPHILIC COLLOID, AT LEAST ONE MULTIVALENT METAL SALT AND AT LEAST ONE VOLATILE ACID, (B) A FILLER, AND (C) A CHROMATE HARDENING AGENT FOR THE HYDROPHILIC COLLOID, THE PH OF THE COMPOSITION BEING BELOW 7.
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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |