US3284871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermittently-crimped filament and the method for the production thereof
Assignee: Toray Industries Inc
•
Filing: 1962-12-19
•
Granted: 1966-11-15
•
Expires: 1982-12-19
Abstract
No abstract record available.
Inventors
- 👤 Yano Shiro
- 👤 Kawarabayashi Eizaburo
- 👤 Takura Shoichi
- 👤 Morokawa Takuji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:47
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/20; D02G1/205; D02G1/02; D02G1/0206; D02G1/024; D02G1/026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A METHOD FOR PRODUCING AN INTERMITTENTLY CRIMPED MULTI-FILAMENT YARN WHICH IS CHARACTERIZED BY STEPS OF CONTINUOUSLY RUNNING UNDER TENSION A CRIMPED MULTIFILAMENT YARN FORMED OF A THERMOPLASTIC RESIN, INTERMITTENTLY APPLYING TO SAID YARN ALONG ITS LONGITUDINAL DIRECTION A TREATMENT LIQUOR CONTAINING A COMPOUND CAPABLE OF MANIFESTING AT LEAST A SWELLING ACTION IN SAID THERMO PLASTIC FILAMENTS, PASSING THE THUS-TREATED YARN UNDER TENSION THROUGH A HEATING ZONE, AND THEREBY RELEASING THE CRIMP IN THE TREATED PART OF SAID YARN.
Claim 2
Independent Claim
78 words
A METHOD FOR PRODUCING AN INTERMITTENTLY CRIMPED MULTI-FILAMENT YARN WHICH IS CHARACTERIZED BY STEPS OF CONTINUOUSLY RUNNING UNDER TENSION A CRIMPED MULTIFILAMENT YARN FORMED OF A THERMOPLASTIC RESIN, INTERMITTENTLY APPLYING TO SAID YARN ALONG ITS LONGITUDINAL DIRECTION A TREATMENT LIQUOR CONTAINING A COMPOUND CAPABLE OF MANIFESTING AT LEAST A SWELLING ACTION IN SAID THERMO PLASTIC FILAMENTS, PASSING THE THUS-TREATED YARN UNDER TENSION THROUGH A HEATING ZONE, AND THEREBY RELEASING THE CRIMP IN THE TREATED PART OF SAID YARN.
References Cited (Backward Citations)
US1909192A
Cited
US2950521A
Cited
US3039524A
Cited
US3047932A
Cited
US3095630A
Cited
US3034196A
Cited
US3129485A
Cited
US3096559A
Cited
GB929399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |