Patent US2624722A successfully refreshed from Google Patents.
US2624722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified and unmodified acrylonitrile copolymer compositions and method of preparing the same
Assignee: Wyeth Holdings LLC
•
Filing: 1949-02-15
•
Granted: 1953-01-06
•
Expires: 1969-02-15
Abstract
No abstract record available.
Inventors
- 👤 Edward L Kropa
- 👤 Arthur S Nyquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:44
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44; C08F16/00; D; D01; D01F; D01F6/00; D01F6/02; D01F6/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A COMPOSITION OF MATTER COMPRISING THE PRODUCT OF POLYMERIZATION OF A MIXTURE OF COMMONOMERS CONSISTING OF (1) ACRYLONITRILE AND (2) AN UNSATURATED ALCOHOL OF THE CLASS CONSISTING OF ALLYL ALCOHOL AND METHALLYL ALCOHOL IN PROPORTIONS SUCH THAT THE POLYMERIZATION PRODUCT CONTAINS FROM 15 TO 30 PER CENT BY WEIGHT OF THE SAID UNSATURATED ALCOHOL, THE REMAINDER BEING ACRYLONITRILE.
Claim 2
Dependent Claim
58 words
A COMPOSITION OF MATTER COMPRISING THE PRODUCT OF POLYMERIZATION OF A MIXTURE OF COMMONOMERS CONSISTING OF (1) ACRYLONITRILE AND (2) AN UNSATURATED ALCOHOL OF THE CLASS CONSISTING OF ALLYL ALCOHOL AND METHALLYL ALCOHOL IN PROPORTIONS SUCH THAT THE POLYMERIZATION PRODUCT CONTAINS FROM 15 TO 30 PER CENT BY WEIGHT OF THE SAID UNSATURATED ALCOHOL, THE REMAINDER BEING ACRYLONITRILE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-06 | 1956-07-07 | 1957-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-06 | 1960-07-07 | 1961-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-06 | 1964-07-07 | 1965-01-06 | $7700.00 | Window Closed / Lapsed |