US2941969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymer of a quaternary ammonium compound and acrylonitrile, solution thereof, and fiber formed therefrom
Assignee: Wyeth Holdings LLC
•
Filing: 1954-08-26
•
Granted: 1960-06-21
•
Expires: 1974-08-26
Abstract
No abstract record available.
Inventors
- 👤 John A Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:38
CPC Classifications
C; C08; C08F; C08F26/00; C08F220/00; C08F220/02; C08F220/42; C08F220/44; Y; Y10; Y10S; Y10S526/00; Y10S526/911; Y10S526/923
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A POLYMERIZABLE COMPOSITION COMPRISING (1) A QUATERNARY AMMONIUM COMPOUND REPRESENTED BY THE GENERAL FORMULA
Claim 2
Dependent Claim
14 words
A POLYMERIZABLE COMPOSITION COMPRISING (1) A QUATERNARY AMMONIUM COMPOUND REPRESENTED BY THE GENERAL FORMULA
References Cited (Backward Citations)
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Cited
US2676952A
Cited
US2609392A
Cited
DE847347C
Cited
US2654779A
Cited
US2650251A
Cited
US2677679A
Cited
US2794015A
Cited
US2772310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |