Patent US3329644A successfully refreshed from Google Patents.
US3329644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylonitrile polymers modified with high molecular weight n, n-dimethylamides
Assignee: Monsanto Co
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Filing: 1962-12-18
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Granted: 1967-07-04
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Expires: 1982-12-18
Abstract
No abstract record available.
Inventors
- 👤 Gerd R Baur
- 👤 William B Henderson
- 👤 James R Misenheimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:21
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A NEW COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYACRYLONITRILE AND A COPOLYMER CONTAINING AT LEAST 80 PERCENT OF POLYMERIZED ACRYLONITRILE WITH UP TO 20 PERCENT OF ANOTHER MONO-OLEFINIC MONOMER, COPOLYMERIZED THEREWITH, AND FROM ABOUT 0.5 TO 20 PERCENT, BASED ON THE TOTAL WEIGHT OF THE COMPOSITION, OF AN AMIDE HAVING THE FORMULA
Claim 2
Dependent Claim
60 words
A NEW COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYACRYLONITRILE AND A COPOLYMER CONTAINING AT LEAST 80 PERCENT OF POLYMERIZED ACRYLONITRILE WITH UP TO 20 PERCENT OF ANOTHER MONO-OLEFINIC MONOMER, COPOLYMERIZED THEREWITH, AND FROM ABOUT 0.5 TO 20 PERCENT, BASED ON THE TOTAL WEIGHT OF THE COMPOSITION, OF AN AMIDE HAVING THE FORMULA
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |