US3704144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant rayon composition and process
Assignee: Stauffer Chemical Co
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Filing: 1971-01-20
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Granted: 1972-11-28
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Expires: 1991-01-20
Abstract
Abstract WHEREIN THE METHYL RADICALS MAY BE ATTACHED TO ANY OF 2, 3, 4, 5 OR 6 POSITIONS. DI(CH3-),((DI(CH3-)PHENYL)-O-P(=O)(-NH2)-O-)BENZENE A PROCESS FOR SPINNING SYNTHETIC FIBERS, SUCH AS RAYON, CONSISTING OF INCORPORATING THEREIN A FIRE RETARDANT COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF A DIXYLYL PHOSPHORAMIDATE HAVING THE FORMULA:
Inventors
- 👤 Arthur D F Toy
- 👤 Edward N Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:29
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/22; C07F9/24; C07F9/2404; C07F9/242; C08; C08K; C08K5/00; C08K5/49; C08K5/5399; D; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |