Patent US3531368A successfully refreshed from Google Patents.
US3531368A
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US
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Synthetic filaments and the like
Assignee: Toray Industries Inc
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Filing: 1967-01-04
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Granted: 1970-09-29
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Expires: 1987-01-04
Abstract
Abstract A synthetic filament and a yarn composed thereof wherein the filament comprises at least two different incompatible synthetic linear high polymers, one being distributed as islands in the sea of the other polymer element when seen in cross-section, each island being continuous along the axis of the filament and being characterized by their uniformity in cross-sectional dimension in any cross-section of the filament.
Inventors
- 👤 Miyoshi Okamoto
- 👤 Koji Watanabe
- 👤 Yasuhiko Nukushina
- 👤 Tsuneo Aizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:36
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/28; D01D5/30; D01D5/36; Y; Y10; Y10S; Y10S264/00; Y10S264/26; Y10S57/00; Y10S57/905; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2931; Y10T428/2933; Y10T428/2935; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3382305A
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US3099067A
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US2955961A
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US3117906A
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US3295552A
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US3330899A
Cited
US3369057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |