US3109220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetralobal cross-sectioned filaments
Assignee: EIDP Inc
•
Filing: 1960-08-19
•
Granted: 1963-11-05
•
Expires: 1980-08-19
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Mckinney
- 👤 Harry E Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:26
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/253; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2915; Y10T428/2973; Y10T428/31504; Y10T428/31725; Y10T442/00; Y10T442/30; Y10T442/3065; Y10T442/3089; Y10T442/3114; Y10T442/3122; Y10T442/40; Y10T442/425; Y10T442/431; Y10T442/60; Y10T442/608; Y10T442/609; Y10T442/61
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A TEXTILE FILAMENT PREPARED FROM A SYNTHETIC POLYMER HAVING AN ESSENTIALLY SOLID TETRALOBAL CROSS SECTION ALONG ITS LENGTH, SAID CROSS SECTION HAVING A TIP RADIUS RATIN R1/R IN THE RANGE FROM 0.05 TO 0.80 AND A LOBE ANGLE FROM 25* TO 65*, AND SAID CROSS SECTION BEING SYMMETRICAL ABOUT TWO PERPENDICULAR LINES D2 AND D3 WHICH BISECT SAID CROSS SECTION, THE RATIOS OF (D2/2)/R AND (D3/2)/R BEING IN THE RANGE FROM 0.3 TO 0.9 WITH THE PROVISO THAT WHEN R1/R IS IN THE RANGE FROM 0.05 TO 0.45,
Claim 2
Dependent Claim
88 words
A TEXTILE FILAMENT PREPARED FROM A SYNTHETIC POLYMER HAVING AN ESSENTIALLY SOLID TETRALOBAL CROSS SECTION ALONG ITS LENGTH, SAID CROSS SECTION HAVING A TIP RADIUS RATIN R1/R IN THE RANGE FROM 0.05 TO 0.80 AND A LOBE ANGLE FROM 25* TO 65*, AND SAID CROSS SECTION BEING SYMMETRICAL ABOUT TWO PERPENDICULAR LINES D2 AND D3 WHICH BISECT SAID CROSS SECTION, THE RATIOS OF (D2/2)/R AND (D3/2)/R BEING IN THE RANGE FROM 0.3 TO 0.9 WITH THE PROVISO THAT WHEN R1/R IS IN THE RANGE FROM 0.05 TO 0.45,
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |