US3617346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aziridine adducts of {60 ,{62 -unsaturated nitriles and polymers thereof
Assignee: DRAKE GEORGE L JUN
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Filing: 1969-03-25
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Granted: 1971-11-02
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Expires: 1989-03-25
Abstract
Abstract This invention relates to a process for pretreating cellulosic fabrics with acid catalysts, and then impregnating said fabrics with aziridine adducts of Alpha , Beta -unsaturated nitriles.
Inventors
- 👤 Leon H Chance
- 👤 George L Drake Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:03
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/48; Y; Y10; Y10S; Y10S8/00; Y10S8/93
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3038776A
Cited
US3127732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |