Patent US3734684A successfully refreshed from Google Patents.
US3734684A
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US
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Flame retardant phosphorus containing fibrous products and method for production
Assignee: United States Department of Agriculture
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Filing: 1971-05-07
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Granted: 1973-05-22
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Expires: 1991-05-07
Abstract
Abstract METHYLOL PHOSPHINE, METHYLOL PHOSPHINES IN COMBINATION WITH NITROGENOUS COMPOUNDS OR WATER SOLUBLE ADDUCTS OF THE PHOSPHINE AND NITROGENOUS COMPOUNDS ARE USED TO TREAT ORGANIC FIBROUS DERIVATIVES CONTAINING PRIMARY AND/OR SECONDARY AMINO GROUPS SUCH AS WOOL, LEATHER, NYLON AND AMINIZED COTTONS, ETC., TO PRODUCE FIBROUS DERIVATIVES WHICH ARE FLOW-, WRINKLE-, ROT- AND SHRINK-RESISTANT.
Inventors
- 👤 D Donaldson
- 👤 D Daigle
- 👤 G Drake
- 👤 W Reeves
- 👤 J Beninate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:58
CPC Classifications
C; C14; C14C; C14C9/00; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/43; D06M15/431; D06M15/667
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |