US2517544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions comperising an acrylonitrile polymerization product and a cyanoalkylaminoacetonitrile
Assignee: Wyeth Holdings LLC
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Filing: 1947-12-20
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Granted: 1950-08-08
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Expires: 1967-12-20
Abstract
No abstract record available.
Inventors
- 👤 Cresswell Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:19
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/315; Y; Y10; Y10T; Y10T24/00; Y10T24/21; Y10T24/2185
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
16 words
A COMPOSITION OF MATTER COMPRISING HOMOPOLYMERIC ACRYLONITRILLE DISSOLVED IN A COMPOUND REPRESENTED BY THE GENERAL FORMULA
References Cited (Backward Citations)
US2404715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |