Patent US3734986A successfully refreshed from Google Patents.
US3734986A
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US
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Method for producing polyamide fiber having improved silky feel and lustre
Assignee: Toray Industries Inc
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Filing: 1970-07-31
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Granted: 1973-05-22
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Expires: 1990-07-31
Abstract
Abstract POLYAMIDE FIBER HAVING IMPROVED SILKY LUSTRE AND SILKY TOUCH IS PRODUCED BY MELT-SPINNING MODIFIED POLYAMIDE PELLETS OBTAINED BY DISPERSING FINE PARTICLES OF POLYALKYLENE ETHER INTO POLYAMIDE, CONTINUOUSLY DRAWING THE MELT SPUN FILAMENTS UNTIL THE BIREFRINGENCE OF SAID FILAMENT REACHES A SPECIFIC PRE-SELECTED POINT, TREATING THE DRAWN YARN WITH A SOLVENT FOR POLYALKYLENE ETHER AND RECOVERING THE SAME.
Inventors
- 👤 T Kato
- 👤 T Hidaka
- 👤 C Okagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:22
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/24; D01D5/247; C; C08; C08L; C08L77/00; D01F; D01F1/00; D01F1/02; D01F1/10; D01F6/00; D01F6/58; D01F6/60; Y; Y10; Y10S; Y10S264/00; Y10S264/13; Y10S264/61
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |