Patent US3867144A successfully refreshed from Google Patents.
US2642406A
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Solutions of polymers of acrylonitrile
Assignee: Eastman Kodak Co
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Filing: 1949-01-27
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Granted: 1953-06-16
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Expires: 1969-01-27
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Dickey
- 👤 Theodore E Stanin
- 👤 Jr Harry W Coover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:22
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/098; D; D01; D01F; D01F6/00; D01F6/02; D01F6/18; C08J2333/00; C08J2333/18; C08J2333/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
AS A NEW COMPOSITION OF MATTER, A COPOLYMER OF ACRYLONITRILE CONTAINING IN THE POLYMER MOLECULE FROM 80 TO 95% BY WEIGHT OF ACRYLONITRILE AND FROM 5 TO 20% BY WEIGHT OF ANOTHER MONOETHYLENICALLY-UNSATURATED, POLYMERIZABLE COMPOUND DISSOLVED IN AN ORGANIC PHOSPHORUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF THOSE REPRESENTED BY THE FOLLOWING TWO FORMULAS:
Claim 2
Dependent Claim
54 words
AS A NEW COMPOSITION OF MATTER, A COPOLYMER OF ACRYLONITRILE CONTAINING IN THE POLYMER MOLECULE FROM 80 TO 95% BY WEIGHT OF ACRYLONITRILE AND FROM 5 TO 20% BY WEIGHT OF ANOTHER MONOETHYLENICALLY-UNSATURATED, POLYMERIZABLE COMPOUND DISSOLVED IN AN ORGANIC PHOSPHORUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF THOSE REPRESENTED BY THE FOLLOWING TWO FORMULAS:
References Cited (Backward Citations)
US2172241A
Cited
US2456360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |