Patent US3135646A successfully refreshed from Google Patents.
US3135646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helically crimped textile filaments
Assignee: EIDP Inc
•
Filing: 1961-05-05
•
Granted: 1964-06-02
•
Expires: 1981-05-05
Abstract
No abstract record available.
Inventors
- 👤 Robert B Hayden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:53
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/22; D01D5/253; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2925; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/2973
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A HELICALLY CRIMPED POLYAMIDE TEXITLE FILAMENT CONTAINING AT LEAST 10 CRIMPS PER INCH AND HAVING A DENIER FROM 1 TO 30 AND A BULBUOUS CROSS SECTION COMPRISED OF A STEM PORTION WITHA FIN PROJECTING THEREFROM, SAID FIN BEING ORIENTED TOWARD THE AXIS OF THE HELIX, SAID CROSS SECTION HAVING A LENGTH TO AVERAGE WIDTH RATIO OF AT LEAST 2:1 AND AN AREA RATIO OF AT LEAST 1.5:1.
Claim 2
Dependent Claim
67 words
A HELICALLY CRIMPED POLYAMIDE TEXITLE FILAMENT CONTAINING AT LEAST 10 CRIMPS PER INCH AND HAVING A DENIER FROM 1 TO 30 AND A BULBUOUS CROSS SECTION COMPRISED OF A STEM PORTION WITHA FIN PROJECTING THEREFROM, SAID FIN BEING ORIENTED TOWARD THE AXIS OF THE HELIX, SAID CROSS SECTION HAVING A LENGTH TO AVERAGE WIDTH RATIO OF AT LEAST 2:1 AND AN AREA RATIO OF AT LEAST 1.5:1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |