US2776270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixtures comprising acrylonitrile polymers with polyacrylonitrile
Assignee: Eastman Kodak Co
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Filing: 1952-10-21
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Granted: 1957-01-01
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Expires: 1972-10-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
- 👤 Joseph B Dickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:09
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/18; C08L33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A RESINOUS COMPOSITION COMPRISING A MIXTURE OF FROM 5 TO 95 PARTS BY WEIGHT OF POLYACRYLONITRILE AND FROM 95 TO 5 PARTS BY WEIGHT OF A PREFORMED ACRYLONITRILE POLYMER OBTAINED BY HEATING IN THE PRESENCE OF A POLYMERIZATION CATALYST AN AQUEOUS DISPERSION OF MONOMER SELECTED FROM THE GROUP CONSISTING OF THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULAS:
Claim 2
Dependent Claim
57 words
A RESINOUS COMPOSITION COMPRISING A MIXTURE OF FROM 5 TO 95 PARTS BY WEIGHT OF POLYACRYLONITRILE AND FROM 95 TO 5 PARTS BY WEIGHT OF A PREFORMED ACRYLONITRILE POLYMER OBTAINED BY HEATING IN THE PRESENCE OF A POLYMERIZATION CATALYST AN AQUEOUS DISPERSION OF MONOMER SELECTED FROM THE GROUP CONSISTING OF THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULAS:
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US2311548A
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US2425192A
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US2657191A
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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) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |