US2701243A
Expired / Lapsed
US
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Reaction products of polyvinylsulfonates with c-amino-pyridines
Assignee: Eastman Kodak Co
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Filing: 1951-09-29
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Granted: 1955-02-01
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Expires: 1971-09-29
Abstract
No abstract record available.
Inventors
- 👤 Delbert D Reynolds
- 👤 William O Kenyon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:52
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053; C; C08; C08F; C08F8/00; C08F8/30; G03C1/76; G03C1/825; G03C1/835; G03C7/00; G03C7/22; G03C7/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A PROCESS FOR PREPARING A POLYVINYL RESIN CONTAINING FROM 6% TO 24% BY WEIGHT OF A VINLY SULFONATE HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
22 words
A PROCESS FOR PREPARING A POLYVINYL RESIN CONTAINING FROM 6% TO 24% BY WEIGHT OF A VINLY SULFONATE HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
US2311059A
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US2567750A
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US2537114A
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US2592107A
Cited
US2531469A
Cited
US2531468A
Cited
US2566244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |