Patent US3564834A successfully refreshed from Google Patents.
US3564834A
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US
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Twist set polyamide yarn and process for its manufacture
Assignee: EIDP Inc
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Filing: 1969-07-09
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Granted: 1971-02-23
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Expires: 1989-07-09
Abstract
Abstract CREPE FABRICS HAVING THE LIVELY AND SUPPLE QUALITIES ASSOCIATED WITH SILK CREPES ARE PREPARED FROM CERTAIN TWISTED, HEAT-TREATED POLYCARBONAMIDE YARNS. THESE FABRICS ARE WASHABLE AND RESISTANT TO WATER SPOTTING.
Inventors
- 👤 Raymond J Elia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:42
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/265; D; D01; D01F; D01F6/00; D01F6/58; D01F6/60; D01F6/78; D01F6/80
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |