Patent US3025661A successfully refreshed from Google Patents.
US3025661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coiled textile strand and method of producing same
Assignee: Duplan Corp
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Filing: 1958-08-18
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Granted: 1962-03-20
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Expires: 1978-08-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Henry M Strub
- 👤 Charles C Michalek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:35
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/0233
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A METHOD OF PRODUCING A HIGHLY STRETCHABLE COMPOSITE TEXTILE STRAND WHICH COMPRISES INDIVIDUALLY TWISTING AT LEAST TWO ENDS OF THERMOPLASTIC YARN IN A FIRST DIRECTION, PLYING THE TWISTED INDIVIDUAL ENDS TOGETHER WHILE APPLYING TWIST IN A SECOND DIRECTION TO THE TWO ENDS TO FORM A COMPOSITE STRAND, HEATING TO SET THE TWIST IN THE STRAND, TWISTING THE COMPOSITE STRAND IN THE FIRST DIRECTION, HEATSETTING THE STRAND, INTWISTING THE COMPOSITE STRAND IN THE SECOND DIRECTION, AND THEN RELAXING THE STRAND TO PERMIT
Claim 2
Independent Claim
81 words
A METHOD OF PRODUCING A HIGHLY STRETCHABLE COMPOSITE TEXTILE STRAND WHICH COMPRISES INDIVIDUALLY TWISTING AT LEAST TWO ENDS OF THERMOPLASTIC YARN IN A FIRST DIRECTION, PLYING THE TWISTED INDIVIDUAL ENDS TOGETHER WHILE APPLYING TWIST IN A SECOND DIRECTION TO THE TWO ENDS TO FORM A COMPOSITE STRAND, HEATING TO SET THE TWIST IN THE STRAND, TWISTING THE COMPOSITE STRAND IN THE FIRST DIRECTION, HEATSETTING THE STRAND, INTWISTING THE COMPOSITE STRAND IN THE SECOND DIRECTION, AND THEN RELAXING THE STRAND TO PERMIT
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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) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |