Patent US3227075A successfully refreshed from Google Patents.
US3227075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planographic printing plates
Assignee: Fitchburg Paper Co
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Filing: 1961-04-04
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Granted: 1966-01-04
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Expires: 1981-04-04
Abstract
No abstract record available.
Inventors
- 👤 Guastella Samuel
- 👤 Edward J Guerra
- 👤 D D Uong
- 👤 Wyman F Uhl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:54
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/03; B41N3/038; Y; Y10; Y10S; Y10S516/00; Y10S516/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PLANOGRAPHIC PRINTING PLATE COMPRISING A PAPER BASE SHEET HAVING A PRINTING FACE CARRYING AS ITS PRINCIPAL PLANOGRAPHIC COMPONENT PARTICLES OF COOLOIDAL DIMENSIONS OF BETWEEN 10 MILLIMICRONS AND 50 MILLIIMICRONS OF THE PRODUCT OBTAINED BY PARTIALLY HYDROLYZING A LOWER ALKYL SILICATE BY REACTING WATER AND AMMONIA WITH A MIXTURE OF SAID LOWER ALKYL SILICATE AND A SOLVENT WHICH SOLVENT COMPRISES 25 TO 100 PERCENT OF MATERIAL SELECTED FROM THE CLASS CONSISTING OF DIMETHYL FORMAMIDE AND DIMETHYL ACETAMIDE AND THE BALANCE OF WHICH SOLVENT CONSISTS OF AN UNREACTIVE WATER-MISCIBLE POLAR ORGANIC SOLVENT, THE RELATIVE PROPORTIONS OF REACTANTS BEING:
Claim 2
Dependent Claim
97 words
A PLANOGRAPHIC PRINTING PLATE COMPRISING A PAPER BASE SHEET HAVING A PRINTING FACE CARRYING AS ITS PRINCIPAL PLANOGRAPHIC COMPONENT PARTICLES OF COOLOIDAL DIMENSIONS OF BETWEEN 10 MILLIMICRONS AND 50 MILLIIMICRONS OF THE PRODUCT OBTAINED BY PARTIALLY HYDROLYZING A LOWER ALKYL SILICATE BY REACTING WATER AND AMMONIA WITH A MIXTURE OF SAID LOWER ALKYL SILICATE AND A SOLVENT WHICH SOLVENT COMPRISES 25 TO 100 PERCENT OF MATERIAL SELECTED FROM THE CLASS CONSISTING OF DIMETHYL FORMAMIDE AND DIMETHYL ACETAMIDE AND THE BALANCE OF WHICH SOLVENT CONSISTS OF AN UNREACTIVE WATER-MISCIBLE POLAR ORGANIC SOLVENT, THE RELATIVE PROPORTIONS OF REACTANTS BEING:
References Cited (Backward Citations)
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US2408654A
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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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |