US3558760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for spinning two component polyamide filaments
Assignee: EIDP Inc
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Filing: 1969-12-17
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Granted: 1971-01-26
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Expires: 1989-12-17
Abstract
Abstract THE PRODUCTION OF A CRIMPABLE FILAMENT BY DRAWING, HEAT RELAXING, COOLING AND STRETCHING A MELT SPUN COMPOSITE OF ECCENTRICALLY DISPOSED, DIFFERENTIALLY SHRINKABLE COMPONENTS OF DIFFERENT NYLON COMPOSITIONS. CRIMP DEVELOPED IN THE HEAT RELAXING STEP IS PULLED OUT IN THE STRETCHING STEP, LEAVING THE FILAMENT CRIMPABLE.
Inventors
- 👤 Earl Herbert Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:26
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/18; D01; D01D; D01D5/00; D01D5/12; D01D5/16; D01D5/28; D01D5/30; D01F; D01F8/00; D01F8/04; D01F8/12
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |