US3567359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of cellulosic textile materials to provide fire resistance thereto
Assignee: Akzo Nobel UK PLC
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Filing: 1965-08-20
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Granted: 1971-03-02
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Expires: 1985-08-20
Abstract
Abstract THE FIRE RESISTANCE OF CELLULOSIC MATERIAL IS IMPROVED BY IMPREGNATING IT WITH A NON-VOLATILE INORGANIC ACID, CYANAMIDE, AND A HALOGENATED ALKYL PHOSPHATE AND THEN HEATING TO EFFECT REACTION BETWEEN THE CELLULOSE AND THE IMPREGNANTS.
Inventors
- 👤 David Blackburn
- 👤 Edward Haslam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:59
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/432; D06M13/244; D06M13/282; D06M13/288; D06M13/292
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |