US2661344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized acrylonitrile polymers
Assignee: Monsanto Chemicals Ltd
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Filing: 1950-10-26
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Granted: 1953-12-01
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Expires: 1970-10-26
Abstract
No abstract record available.
Inventors
- 👤 Robert J Slocombe
- 👤 George L Wesp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:18
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
62 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 TEN PER CENT BY WEIGHT OF A CALCIUM COMPOUND OF THE GROUP CONSISTING OF CALCIUM CHLORIDE, CALCIUM NITRATE, CALCIUM OXIDE AND CALCIUM HYDROXIDE.
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) | 1956-11-30 | 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 |