US3568426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uniformly entangled multifilament yarn
Assignee: Honeywell International Inc
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Filing: 1969-01-27
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Granted: 1971-03-09
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Expires: 1989-01-27
Abstract
Abstract MULTIFILAMENT YARN IS PRODUCED CONTAINING A SERIES OF UNIFORMLY SPACED REGIONS OF ENTANGLEMENT, EACH OF SAID REGIONS INVOLVING A MAJORITY OF THE FILAMENTS CONSTITUTING THE YARN, AS WELL AS BEING OF GENERALLY CONSTANT LENGTH AND HAVING A LOW VARIABILITY IN THE DEGREE OF ENTANGLEMENT. THE PRODUCTION OF SUCH YARN CAN BE COUPLED DIRECTLY WITH OTHER YARN TREATING OPERATIONS, E.G., DRAWTWISTING, WITHOUT IMPAIRMENT OF YARN QUALITY DUE TO VARIATIONS IN THE TENSION OF THE RUNNING YARN. YARNS SO PRODUCED HAVE IMPROVED DYEING QUALITIES.
Inventors
- 👤 Robert F Whitley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:05
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/08; Y; Y10; Y10S; Y10S57/00; Y10S57/908; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/2976
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) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |