US3817779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for imparting flame retardancy to a textile
Assignee: Hooker Chemical Corp
•
Filing: 1972-03-01
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Granted: 1974-06-18
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Expires: 1992-03-01
Abstract
Abstract NORMALLU FLAMMABLE EXTILES ARE RENDERED FLAME RETARDANT BY THE INTIMATE ASSOCIATION THEREWITH OF A FLAME RETARDING AMOUNT OF A COMPOUND OF THE FORMULA CH2=C(-R3)-COO-CH(-R2)-P(=O)(-O-R1)2 WHEREIN R1 IS LOWER ALKYL OF 1 TO 4 CARBON ATOMS, R2 IS HYDROGEN AND LOWER ALKYL OF 1 YO 4 CARBONS AND R3 IS HYDROGEN AND LOWER ALKYL OF 1 TO 4 CARRBON ATOMS.
Inventors
- 👤 P Golborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:58
CPC Classifications
D; D06; D06M; D06M14/00; D06M14/18; D06M14/20; D06M14/24; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; D06M13/00; D06M13/244; D06M13/282; D06M13/288; D06M14/02; D06M14/04; D06M14/06; D06M14/22; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921
Claims Analysis
Total Claims: 0
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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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |