US3691749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilobal multifilament yarn
Assignee: EIDP Inc
•
Filing: 1970-12-18
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Granted: 1972-09-19
•
Expires: 1990-12-18
Abstract
Abstract Multifilament PACM polyamide yarn, of multilobal filaments having specified cross-sectional characteristics, is false-twist textured into yarn which provides fabrics having improved visual aesthetics. Freedom from objectionable glitter is exemplified for yarns of hexalobal filaments composed of PACM-12 polyamide derived from bis(4-aminocyclohexyl)-methane and dodecanedioic acid.
Inventors
- 👤 Jerry Bruce Mckay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:46
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0286; D01; D01D; D01D5/00; D01D5/253; D01F; D01F6/00; D01F6/58; D01F6/60; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
Yarn as defined in claim 1 wherein said filaments have a hexalobal cross section.
Claim 2
Dependent Claim
21 words
Yarn as defined in claim 1 wherein (MR) (N)/ (d1/2e.0352N) is 3.5 to 5.5 and (MR)/cosec( 90(N-2)/N) is 1.1 to 1.4.
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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |