US3594266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite filament
Assignee: Toray Industries Inc
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Filing: 1968-05-21
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Granted: 1971-07-20
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Expires: 1988-05-21
Abstract
Abstract COMPOSITE POLYAMIDE FILAMENT HAVING IMPROVED ANTISTATIC PROPERTIES, WHEREIN ONE OF THE COMPONENTS IS COMPOSED OF SYNTHETIC POLYAMIDES, AND ANOTHER COMPOSED OF A POLYMER BLEND OF A POLYAMIDE AND A BLOCK-COPOLYETHERAMIDE. THE BLOCK-COPOLYETHERAMIDE COMPRISES 15 TO 85%, PREFERABLY ABOUT 20 TO 60% BY WEIGHT OF POLYETHER SEGMENTS, WHICH SEGMENTS SHOULD PRESENT IN AN AMOUNT OF 0.1 TO 10%, PREFERABLY ABOUT 0.3 TO 5% BY WEIGHT BASED ON THE COMPOSITE FILAMENT. IT IS ADVANTAGEOUS THAT EACH OF THE POLYETHER SEGMENTS CONTAINS ABOUT 45 TO 130 ETHER OXYGEN ATOMS.
Inventors
- 👤 Kaoru Okazaki
- 👤 Yoichi Shimokawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:52
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; D01F8/12; C; C08; C08L; C08L77/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2931; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 0
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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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |