Patent US2734040A successfully refreshed from Google Patents.
US2734040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sssstoi
Assignee: —
•
Filing: —
•
Granted: 1956-02-07
•
Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:04
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/095; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/109; C08J2351/00; Y; Y10; Y10S; Y10S8/00; Y10S8/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A COMPOSITION COMPRISING A GRAFTED ACRYLONITRILE POLYMER, ETHYLENE CARBONATE AND WATER, WHEREIN THE ETHYLENE CARBONATE IS IN EXCESS OF THE WATER ON A WEIGHT BASIS, SAID GRAFTED ACRYLONITRILE POLYMER BEING OBTAINED BY POLYMERIZING FROM ABOUT 85 TO 100 PARTS BY WEIGHT OF ACRYLONITRILE WITH FROM 0 TO 15 PARTS BY WEIGHT OF AT LEAST ONE OTHER MONOMERIC VINYL COMPOUND IN THE PRESENCE OF A POLYMER WHICH IS WATER SOLUBLE, HAS A MOLECULAR WEIGHT GREATER THAN 1000, AND IS PRESENT IN AN AMOUNT BETWEEN 5 AND 40% BY WEIGHT OF THE GRATED POLYMER.
Claim 2
Dependent Claim
92 words
A COMPOSITION COMPRISING A GRAFTED ACRYLONITRILE POLYMER, ETHYLENE CARBONATE AND WATER, WHEREIN THE ETHYLENE CARBONATE IS IN EXCESS OF THE WATER ON A WEIGHT BASIS, SAID GRAFTED ACRYLONITRILE POLYMER BEING OBTAINED BY POLYMERIZING FROM ABOUT 85 TO 100 PARTS BY WEIGHT OF ACRYLONITRILE WITH FROM 0 TO 15 PARTS BY WEIGHT OF AT LEAST ONE OTHER MONOMERIC VINYL COMPOUND IN THE PRESENCE OF A POLYMER WHICH IS WATER SOLUBLE, HAS A MOLECULAR WEIGHT GREATER THAN 1000, AND IS PRESENT IN AN AMOUNT BETWEEN 5 AND 40% BY WEIGHT OF THE GRATED POLYMER.
References Cited (Backward Citations)
US2649434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |