US2662875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terpolymers of acrylonitrile and allyl amines
Assignee: Solutia Inc
•
Filing: 1952-02-20
•
Granted: 1953-12-15
•
Expires: 1972-02-20
Abstract
No abstract record available.
Inventors
- 👤 David W Chaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:44
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
36 words
A TERPOLYMER CONTAINING, BY WEIGHT IN THE POLYMER MOLECULE (A) AT LEAST 50 PERCENT OF ACRYLONITRILE; (B) AT LEAST 1 PERCENT OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF (1) ALLYL AMINES HAVING THE FORMULA
References Cited (Backward Citations)
US2172822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |