Patent JPS5896751A successfully refreshed from Google Patents.
Patent US3567569A successfully refreshed from Google Patents.
US3567569A
Expired / Lapsed
US
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Synthetic fibers having novel shape
Assignee: Toray Industries Inc
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Filing: 1966-08-04
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Granted: 1971-03-02
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Expires: 1986-08-04
Abstract
Abstract SYNTHETIC, MOLECULARLY ORIENTED FIBERS OF FINE PITCH AND HAVING LARGE CONCAVITIES AND CONVEXITIES COMPRISING A MELT-SPINNABLE SYNTHETIC POLYMER HAVING A SINGLE CONTINUOUS MALE SCREW SHAPE WHEREIN THE RATIO OF PITCH TO OUTER DIAMETER OF THE SCREW THREAD IS WITHIN THE RANGE OF 0.3 TO 15, AND THE RATIO OF HEIGHT TO OUTER DIAMETER OF SAID THREAD IS IN THE RANGE OF FROM 0.03 TO 0.4.
Inventors
- 👤 Terumichi Ono
- 👤 Shigeru Mizutani
- 👤 Hazime Arai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:16
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/20; D02; D02J; D02J1/00; D02J1/22; D02J1/228; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/2976; 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) | 1974-03-01 | 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 |