US2857322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerization of acrylonitrile
Assignee: Solutia Inc
•
Filing: 1954-04-28
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Granted: 1958-10-21
•
Expires: 1974-04-28
Abstract
No abstract record available.
Inventors
- 👤 Edwin W Lard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:21
CPC Classifications
C; C08; C08F; C08F20/00; C08F2/00; C08F2/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
THE PROCESS FOR PREPARING POLYMERS OF ACRYLONITRILE WHICH COMPRISES, DISSOLVING FROM FIVE TO 20 PERCENT ACETALDEHYDE BASED ON THE WEIGHT OF MONOMER, IN THE ACRYLONITRILE AND EXPOSING THE RESULTING SOLUTION TO ACTINIC LIGHT.
Claim 2
Dependent Claim
33 words
THE PROCESS FOR PREPARING POLYMERS OF ACRYLONITRILE WHICH COMPRISES, DISSOLVING FROM FIVE TO 20 PERCENT ACETALDEHYDE BASED ON THE WEIGHT OF MONOMER, IN THE ACRYLONITRILE AND EXPOSING THE RESULTING SOLUTION TO ACTINIC LIGHT.
References Cited (Backward Citations)
US2104760A
Cited
US2548685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |