US2684281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production and use of solutions of acrylic polymers
Assignee: Acordis UK Ltd
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Filing: 1950-12-22
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Granted: 1954-07-20
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Expires: 1970-12-22
Abstract
No abstract record available.
Inventors
- 👤 Lincoln James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:36
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/096; C08J2333/00; C08J2333/18; C08J2333/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
COMPOSITIONS COMPRISING A FIBRE-FORMING ACRYLONITRILE POLYMER SELECTED FROM THE GROUP WHICH CONSISTS OF POLYACRYLONITRILE AND ACETONEINSOLUBLE COPOLYMERS OF ACRYLONITRILE WITH ANOTHER MONOVINYL COMPOUND WHICH CONTAIN AT LEAST 85% BY WEIGHT OF ACRYLONITRILE, DISSOLVED IN A LIQUID CONSISTING OF A NITROALKANOL CONTAINING AT MOST 3 CARBON ATOMS IN THE MOLECULE WITH UP TO 20%, CALCULATED ON THE VOLUME OF THE NITROALKANOL, OF A DILUENT OF FORMULA ROH, WHERE R IS SELECTED FROM THE GROUP WHICH CONSISTS OF HYDROGEN, METHYL, ETHYL, PROPYL AND ISOPROPYL.
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) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |