US2661346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized acrylonitrile polymers
Assignee: Monsanto Chemicals Ltd
•
Filing: 1950-10-26
•
Granted: 1953-12-01
•
Expires: 1970-10-26
Abstract
No abstract record available.
Inventors
- 👤 George L Wesp
- 👤 Robert J Slocombe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:33
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A HEAT STABLE ACRYLONITRILE POLYMER COMPRISING A POLYMER OF 20 TO 100 PER CENT BY WEIGHT OF ACRYLONITRILE AND UP TO 80 PER CENT OF ANOTHER OLEFINIC MONOMER COPOLYMERIZABLE THEREWITH, SAID POLYMER CONTAINING INTIMATELY DISPERSED THEREIN FROM 0.01 TO 10 CENT BY WEIGHT OF MANGANESE CHLORIDE.
Claim 2
Dependent Claim
46 words
A HEAT STABLE ACRYLONITRILE POLYMER COMPRISING A POLYMER OF 20 TO 100 PER CENT BY WEIGHT OF ACRYLONITRILE AND UP TO 80 PER CENT OF ANOTHER OLEFINIC MONOMER COPOLYMERIZABLE THEREWITH, SAID POLYMER CONTAINING INTIMATELY DISPERSED THEREIN FROM 0.01 TO 10 CENT BY WEIGHT OF MANGANESE CHLORIDE.
References Cited (Backward Citations)
US2404781A
Cited
US2507142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |