US3829400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant polyamide fiber composition using oxy-tin compounds and process for the preparation thereof
Assignee: Toray Industries Inc
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Filing: 1972-05-26
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Granted: 1974-08-13
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Expires: 1992-05-26
Abstract
Abstract THE PRESENT INVENTION DESCRIBES A FLAME RETARDANT POLYAMIDE FIBER AND A PROCESS FOR PRODUCTION THEREOF WHICH INCLUDES THE CONCURRENT USE OF AN OXY-TIN COMPOUND AND A HALOGEN AS FLAME RETARDANT AGENTS. THE HALOGEN MAY BE A HALOGEN CONTAINED IN EITHER A DIVALENT METAL HALIDE OR AN AROGANIC HALOGEN COMPOUND. FURTHERMORE, WHEN A ZINC COMPOUND, FOR EXAMPLE, ZINC OXIDE OR ZINC HYDROXIDE IS ADDED TO THE POLYAMIDE IN ADDITION TO THE OXY-TIN COMPOUND AND HALOGEN, THE FLAME RETARDANT EFFECT INCREASES SUBSTANTIALLY.
Inventors
- 👤 T Kato
- 👤 T Ohira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:17
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/32; D06M11/36; D06M11/46; C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/24; D06M11/07; D06M11/11; D06M11/155
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |