US3722202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinning a filament-wrapped staple fiber core yarn
Assignee: United States Department of Agriculture
•
Filing: 1971-09-24
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Granted: 1973-03-27
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Expires: 1991-09-24
Abstract
Abstract Continuous filament nylon of from 15 to 40 denier has been wrapped and twisted around a cotton core during spinning to produce yarns which are superior in uniformity, strength, and strength variability and can be spun at much higher speeds than the cotton control.
Inventors
- 👤 R Indarte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:35
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/38; D10; D10B; D10B2201/00; D10B2201/01; D10B2201/02; D10B2331/00; D10B2331/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
26 words
A blended yarn produced by the method of claim 1 wherein the continuous man-made filament is nylon, and the staple fibers of the core are cotton.
References Cited (Backward Citations)
US2552210A
Cited
US2831235A
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US2854812A
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US3365872A
Cited
US3643416A
Cited
US3675409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |