US3220173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trilobal filamentary yarns
Assignee: EIDP Inc
•
Filing: 1964-12-02
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Granted: 1965-11-30
•
Expires: 1984-12-02
Abstract
No abstract record available.
Inventors
- 👤 Pitzl Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:09
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A YARN PACKAGE OF CONTINUOUS-FILAMENT, SYNTHETIC, TEXTILE YARN, SAID YARN BEING COMPOSED OF A PLURALITY OF SPECIES OF TRILOBAL FILAMENTS, THE INDIVIDUAL FILAMENTS WITHIN EACH SPECIES BEING OF ESSENTIALLY THE SAME MODIFICATION RATIO, BUT THE SPECIES DIFFERING FROM EACH OTHER IN RESPECT TO SAID RATIO, THE DISTRIBUTION OF MODIFICATION RATIOS OVER THE ENTIRE GROUP OF FILAMENTS CONSTITUTING THE YARN BEING SUCH AS TO GIVE THE GROUP (1) A STANDARD DEVIATION (S) OF AT LEAST 0.08, (2) A SKEWNESS COEFFICIENT (A3) WITHIN THE RANGE OF -0.7 TO +0.7, AND (3) A KURTOSIS COEFFICIENT (A4) IN THE RANGE OF 1.0 TO 4.0.
Claim 2
Dependent Claim
100 words
A YARN PACKAGE OF CONTINUOUS-FILAMENT, SYNTHETIC, TEXTILE YARN, SAID YARN BEING COMPOSED OF A PLURALITY OF SPECIES OF TRILOBAL FILAMENTS, THE INDIVIDUAL FILAMENTS WITHIN EACH SPECIES BEING OF ESSENTIALLY THE SAME MODIFICATION RATIO, BUT THE SPECIES DIFFERING FROM EACH OTHER IN RESPECT TO SAID RATIO, THE DISTRIBUTION OF MODIFICATION RATIOS OVER THE ENTIRE GROUP OF FILAMENTS CONSTITUTING THE YARN BEING SUCH AS TO GIVE THE GROUP (1) A STANDARD DEVIATION (S) OF AT LEAST 0.08, (2) A SKEWNESS COEFFICIENT (A3) WITHIN THE RANGE OF -0.7 TO +0.7, AND (3) A KURTOSIS COEFFICIENT (A4) IN THE RANGE OF 1.0 TO 4.0.
References Cited (Backward Citations)
CA572776A
Cited
US3058290A
Cited
US3033240A
Cited
US2939201A
Cited
US2939202A
Cited
US3097416A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |