US3028804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fountain solution for planographic printing
Assignee: Azoplate Corp
•
Filing: 1959-07-15
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Granted: 1962-04-10
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Expires: 1979-07-15
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm Neugebauer
- 👤 Hans Heiss
- 👤 Fritz Uhlig
- 👤 August Rebenstock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:19
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A FOUNTAIN SOLUTION ADAPTED FRO USE IN AN OFFSET PRINTING PROCESS COMPRISING AN AQUEOUS SUSPENSION OF ABOUT 0.4 TO ABOUT 6 PERCENT OF A MIXTURE OF FINELY DIVIDED SILICON DIOXIDE AND FINELY DIVIDED ALUMINUM OXIDE, THE MIXTURE CONTAINING ABOUT 97 TO ABOUT 99.5 PERCENT SILICON DIOXIDE AND ABOUT 0.5 TO ABOUT 3 PERCENT OF ALUMINUM OXIDE AND HAVING AN AVERAGE PARTICLE SIZE IN THE RANGE OF ABOUT 5 TO ABOUT 40 MILLIMICRONS.
Claim 2
Dependent Claim
72 words
A FOUNTAIN SOLUTION ADAPTED FRO USE IN AN OFFSET PRINTING PROCESS COMPRISING AN AQUEOUS SUSPENSION OF ABOUT 0.4 TO ABOUT 6 PERCENT OF A MIXTURE OF FINELY DIVIDED SILICON DIOXIDE AND FINELY DIVIDED ALUMINUM OXIDE, THE MIXTURE CONTAINING ABOUT 97 TO ABOUT 99.5 PERCENT SILICON DIOXIDE AND ABOUT 0.5 TO ABOUT 3 PERCENT OF ALUMINUM OXIDE AND HAVING AN AVERAGE PARTICLE SIZE IN THE RANGE OF ABOUT 5 TO ABOUT 40 MILLIMICRONS.
References Cited (Backward Citations)
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Cited
US2156100A
Cited
US2534650A
Cited
US2681617A
Cited
US2780168A
Cited
US2833661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |