US3746572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for flame retarding fabrics
Assignee: Stauffer Chemical Co
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Filing: 1971-02-23
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Granted: 1973-07-17
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Expires: 1991-02-23
Abstract
Abstract THE PRESENT INVENTION A PROCESS FOR FLAME RETARDING TEXTILES WHICH COMPRISES: (1) APPLYING TO A TEXTILE AN AQUEOUS SOLUTION CONSISTING OF (A) A PHOSPHONATE HAVING AT LEAST ONE CARBON-BONDED PRIMARY ALCOHOL GROUP, (B) DIMETHYLOLDIHYDROXYETHYLENE UREA, AND (C) A CURING CATALYST; AND (2) CURING THE PHOSPHONATE AND UREA ON THE TEXTILE AND THEREBY RENDERING THE TEXTILE FLAME RETARDANT.
Inventors
- 👤 E Weil
- 👤 R Fearing
- 👤 B Eisenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:56
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/43; D06M15/432; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/268
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |