US2564245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for treating superpolyamide threads
Assignee: Individual
•
Filing: 1947-07-11
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Granted: 1951-08-14
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Expires: 1967-07-11
Abstract
No abstract record available.
Inventors
- 👤 Louis Antoine Billion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:07
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; Y; Y10; Y10S; Y10S2/00; Y10S2/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A METHOD FOR PRODUCING SUPERPOLYAMIDIC YARN HAVING PERMANENT CRIMPING AND FLUFFING PROPERTIES WHICH CONSISTS IN HIGHLY TWISTING A SUPERPOLYAMIDIC YARN, ALLOWING THE YARN TO SHRINK FREELY, SETTING THE YARN, BACK TWISTING THE YARN, TO A LOW TWIST, RELEASING THE FILAMENTS OF SAID YARN AND PLYING THE THREAD OBTAINED WITH A SIMILAR THREAD WHICH HAS BEEN BACK TWISTED TO A LOW TWIST AFTER HAVING INITIALLY BEEN HIGHLY TWISTED IN AN OPPOSITE WAY.
Claim 2
Independent Claim
71 words
A METHOD FOR PRODUCING SUPERPOLYAMIDIC YARN HAVING PERMANENT CRIMPING AND FLUFFING PROPERTIES WHICH CONSISTS IN HIGHLY TWISTING A SUPERPOLYAMIDIC YARN, ALLOWING THE YARN TO SHRINK FREELY, SETTING THE YARN, BACK TWISTING THE YARN, TO A LOW TWIST, RELEASING THE FILAMENTS OF SAID YARN AND PLYING THE THREAD OBTAINED WITH A SIMILAR THREAD WHICH HAS BEEN BACK TWISTED TO A LOW TWIST AFTER HAVING INITIALLY BEEN HIGHLY TWISTED IN AN OPPOSITE WAY.
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) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |