US3344597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making composite yarn
Assignee: Burlington Industries Inc
•
Filing: 1963-12-12
•
Granted: 1967-10-03
•
Expires: 1983-12-12
Abstract
No abstract record available.
Inventors
- 👤 David W Petree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:44
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/32; D02G3/328
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
THE METHOD OF PREPARING A COMPOSITE STRETCH YARN WHICH COMPRISES STRETCHING AN ESSENTIALLY TWIST-FREE ELASTOMER YARN UP TO 90% OF ITS MAXIMUM STRETCHED LENGTH AND TWISTING THE THUS STRETCHED AND ESSENTIALLY TWIST-FREE ELASTOMER YARN WITH AT LEAST ONE SPUN YARN WHICH HAS A TWIST THEREIN OF ABOUT 6-30 TURNS PER INCH, AND KEEPING THE DEGREE OF STRETCH IN SAID ELASTOMER YARN CONSTANT THROUGHOUT SAID TWISTING.
Claim 2
Independent Claim
65 words
THE METHOD OF PREPARING A COMPOSITE STRETCH YARN WHICH COMPRISES STRETCHING AN ESSENTIALLY TWIST-FREE ELASTOMER YARN UP TO 90% OF ITS MAXIMUM STRETCHED LENGTH AND TWISTING THE THUS STRETCHED AND ESSENTIALLY TWIST-FREE ELASTOMER YARN WITH AT LEAST ONE SPUN YARN WHICH HAS A TWIST THEREIN OF ABOUT 6-30 TURNS PER INCH, AND KEEPING THE DEGREE OF STRETCH IN SAID ELASTOMER YARN CONSTANT THROUGHOUT SAID TWISTING.
References Cited (Backward Citations)
US3124924A
Cited
US2207641A
Cited
US2302543A
Cited
US2804745A
Cited
US3009311A
Cited
US3011302A
Cited
US3038295A
Cited
US3069883A
Cited
US3068636A
Cited
US3234950A
Cited
US3098347A
Cited
US3115745A
Cited
US3234725A
Cited
US3234724A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |