Patent US3146575A successfully refreshed from Google Patents.
US3146575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bulky composite stretch yarn
Assignee: Akzo Nobel UK PLC
•
Filing: 1961-08-14
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Granted: 1964-09-01
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Expires: 1981-08-14
Abstract
No abstract record available.
Inventors
- 👤 Geoffrey V Lund
- 👤 Robert D Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:31
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/18; D06; D06M; D06M13/00; D06M13/10; D06M13/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A BULKY, STRETCHY, COMPOSITE YARN OF THEMOPLASTIC FIBERS AND CROSS LINKED CELLULOSIC FIBERS, AT LEAST A MAJOR PORTION OF SAID CROSS LINKED CELLULOSIC FIBERS HAVING A MEMORY, RENDERED PERMANENT BY SAID CROSS LINKING, FOR A PHYSICAL POSITION IN WHICH THEY ARE FOLDED UPON THEMSELVES.
Claim 2
Dependent Claim
44 words
A BULKY, STRETCHY, COMPOSITE YARN OF THEMOPLASTIC FIBERS AND CROSS LINKED CELLULOSIC FIBERS, AT LEAST A MAJOR PORTION OF SAID CROSS LINKED CELLULOSIC FIBERS HAVING A MEMORY, RENDERED PERMANENT BY SAID CROSS LINKING, FOR A PHYSICAL POSITION IN WHICH THEY ARE FOLDED UPON THEMSELVES.
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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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |