Patent US3234724A successfully refreshed from Google Patents.
US3234724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite elastic yarn and the process therefor
Assignee: Rohm and Haas Co
•
Filing: 1963-10-16
•
Granted: 1966-02-15
•
Expires: 1983-10-16
Abstract
No abstract record available.
Inventors
- 👤 Storti Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:17
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/32; D02G3/26; D02G3/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A COMPOSITE YARN COMPRISING A CORE OF ELASTIC THREAD PLIED WITH AN EVEN NUMBER OF NORMALLY TWISTED YARNS OF NON-STRETCHABLE NATURE, HALF OF THE NORMALLY TWISTED YARNS HAVING AN S-TWIST TORQUE AND THE OTHER HALF A Z-TWIST TORQUE, ONE TORQUE BEING GREATER THAN THE OTHER, THE COMPOSITE YARN BEING TWISTED IN THE OTHER DIRECTION FROM THE RESULTANT TORQUE OF THE NORMALLY TWISTED YARNS A SUFFICIENT NUMBER OF TURNS PER INCH TO PRODUCE A BALANCED COMPOSITE YARN.
Claim 2
Dependent Claim
76 words
A COMPOSITE YARN COMPRISING A CORE OF ELASTIC THREAD PLIED WITH AN EVEN NUMBER OF NORMALLY TWISTED YARNS OF NON-STRETCHABLE NATURE, HALF OF THE NORMALLY TWISTED YARNS HAVING AN S-TWIST TORQUE AND THE OTHER HALF A Z-TWIST TORQUE, ONE TORQUE BEING GREATER THAN THE OTHER, THE COMPOSITE YARN BEING TWISTED IN THE OTHER DIRECTION FROM THE RESULTANT TORQUE OF THE NORMALLY TWISTED YARNS A SUFFICIENT NUMBER OF TURNS PER INCH TO PRODUCE A BALANCED COMPOSITE YARN.
References Cited (Backward Citations)
US2263614A
Cited
US2804745A
Cited
US3009311A
Cited
US3011302A
Cited
US3068636A
Cited
US3166885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |