US2649434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of acrylonitrile in the presence of preformed polymers
Assignee: Eastman Kodak Co
•
Filing: 1950-05-27
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Granted: 1953-08-18
•
Expires: 1970-05-27
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
2026-10-23 16:26
CPC Classifications
C; C08; C08F; C08F291/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A PROCESS FOR PREPARING RESINOUS COMPOSITONS COMPRISING HEATING IN THE PRESENCE OF A POLYMERIZATION CATALYST A DISPERSION CONTAINING AS THE SOLE POLYMERIZABLE MONOMER A MONOMER SELECTED FROM THE GROUP CONSISTING OF THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULAS:
Claim 2
Dependent Claim
38 words
A PROCESS FOR PREPARING RESINOUS COMPOSITONS COMPRISING HEATING IN THE PRESENCE OF A POLYMERIZATION CATALYST A DISPERSION CONTAINING AS THE SOLE POLYMERIZABLE MONOMER A MONOMER SELECTED FROM THE GROUP CONSISTING OF THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULAS:
References Cited (Backward Citations)
US2511811A
Cited
US1710825A
Cited
US2123599A
Cited
US2388685A
Cited
US2520959A
Cited
US2538779A
Cited
US2476474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |