US2620324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of acrylonitrile in the presence of amide polymers
Assignee: Eastman Kodak Co
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Filing: 1950-12-01
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Granted: 1952-12-02
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Expires: 1970-12-01
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
2026-10-22 22:22
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A PROCESS FOR PREPARING RESINOUS COMPOSITIONS COMPRISING HEATING IN THE PRESENCE OF A POLYMERIZATION CATALYST A DISPERSION OF FROM 60 TO 90 PERCENT BY WEIGHT OF ACRYLONITRILE AND FROM 10 TO 40 PERCENT BY WEIGHT OF AN ISOLATED POLYMER OF AN AMIDE OF AN ALKENYL CARBOXYLIC ACID CONTAINING FROM 3 TO 5 CARBON ATOMS IN THE ACID RADICAL.
Claim 2
Dependent Claim
58 words
A PROCESS FOR PREPARING RESINOUS COMPOSITIONS COMPRISING HEATING IN THE PRESENCE OF A POLYMERIZATION CATALYST A DISPERSION OF FROM 60 TO 90 PERCENT BY WEIGHT OF ACRYLONITRILE AND FROM 10 TO 40 PERCENT BY WEIGHT OF AN ISOLATED POLYMER OF AN AMIDE OF AN ALKENYL CARBOXYLIC ACID CONTAINING FROM 3 TO 5 CARBON ATOMS IN THE ACID RADICAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |