US3558596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-resistant cellulosic materials and a method of preparation
Assignee: Dow Chemical Co
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Filing: 1969-07-22
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Granted: 1971-01-26
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Expires: 1989-07-22
Abstract
Abstract FIRE-RESISTANT, CROSS-LINKED CELLULOSIC MATERIALS ARE PREPARED BY REACTING A CELLULOSIC MATERIAL WITH A VINYLPHOSPHONATE HAVING THE STRUCTURAL FORMULA: 2-(CH2=C(-R'')-),2-(O=),4-R",5-R"''-1,3,2-DIOXAPHOSPHOLANE WHEREIN R'', R"'' ARE HYDROGEN OR HYDROCARBON GROUPS. SAID FIRE-RESISTANT MATERIALS ARE USEFUL IN THE TEXTILE, WOOD AND PAPER INDUSTRIES.
Inventors
- 👤 Donald N Demott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:24
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/313
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |