US2983712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers of acrylonitrile
Assignee: EIDP Inc
•
Filing: 1958-03-31
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Granted: 1961-05-09
•
Expires: 1978-03-31
Abstract
No abstract record available.
Inventors
- 👤 William K Wilkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:27
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44; C08F220/46; C07; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/13; C07C309/14; C07C309/15; C07C309/28; C07C309/45; C07C309/51
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
AS A NEW COMPOSITION OF MATTER, A POLYMERIZABLE SULFONATED VINYL MONOMER HAVING THE FORMULA
Claim 2
Dependent Claim
14 words
AS A NEW COMPOSITION OF MATTER, A POLYMERIZABLE SULFONATED VINYL MONOMER HAVING THE FORMULA
References Cited (Backward Citations)
US2723254A
Cited
US2837501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |