US2860039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graining zinc offset plates
Assignee: FMC Corp
•
Filing: 1955-04-04
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Granted: 1958-11-11
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Expires: 1975-04-04
Abstract
No abstract record available.
Inventors
- 👤 Paul H Margulies
- 👤 Jr Henry E Winters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:59
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/03; B41N3/038
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A PROCESS OF CHEMICALLY GRAINING COLD ROLLED ALLOY ZINC OFFSET PLATES WHICH COMPRISES TREATING THE PLATE WITH AN AQUEOUS SOLUTION COMPRISING 1 TO 5% SULFURIC ACID AND 1 TO 10% HYDROGEN PEROXIDE BY WEIGHT.
Claim 2
Dependent Claim
34 words
A PROCESS OF CHEMICALLY GRAINING COLD ROLLED ALLOY ZINC OFFSET PLATES WHICH COMPRISES TREATING THE PLATE WITH AN AQUEOUS SOLUTION COMPRISING 1 TO 5% SULFURIC ACID AND 1 TO 10% HYDROGEN PEROXIDE BY WEIGHT.
References Cited (Backward Citations)
US2154451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |