Patent US3600271A successfully refreshed from Google Patents.
US3600271A
Expired / Lapsed
US
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Crimped thermoplastic filament having a two phase cross-section
Assignee: Toray Industries Inc
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Filing: 1967-11-28
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Granted: 1971-08-17
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Expires: 1987-11-28
Abstract
Abstract AN IMPROVED CRIMPED FILAMENT OF THERMOPLASTIC SYNTHETIC HIGH POLYMER OF THE INVENTION IS COMPOSED OF NONCONJUGATED STRUCTURE HAVING TWO DIFFERENT PHASES IN CROSS SECTION OF SAID FILAMENT. THE ABOVE-MENTIONED TWO DIFFERENT PHASES IN CROSS SECTION OF THE FILAMENT IS DEFINED BY THE DIFFERENCE IN DYEABILITY OR REFRACTION INDEX. THE CRIMPED FILAMENT OF THE INVENTION IS PROVIDED WITH THE OUTSIDE ROUGHENED SURFACE HAVING NUMEROUS FINE PIT-LIKE PORTIONS. THE PROCESS FOR MANUFACTURING THE CRIMPED FIBER OF THE INVENTION IS ALSO DISCLOSED.
Inventors
- 👤 Terumichi Ono
- 👤 Tsuneo Haga
- 👤 Yasuo Takagi
- 👤 Tomitake Higuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:53
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/22; D02; D02G; D02G1/00; D02G1/004; D02J; D02J1/00; D02J1/22; D02J1/229; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2973; Y10T428/2978; Y10T428/298
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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |