Patent US2604667A successfully refreshed from Google Patents.
US2604667A
Expired / Lapsed
US
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Yarn process
Assignee: EIDP Inc
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Filing: 1950-08-23
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Granted: 1952-07-29
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Expires: 1970-08-23
Abstract
No abstract record available.
Inventors
- 👤 Hebeler Harold Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:55
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/58; D01F6/62; D01D; D01D5/00; D01D5/08; D01D5/098; Y; Y10; Y10S; Y10S8/00; Y10S8/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PRCOESS FOR PRODUCING TENACIOUS AS-SPUN FIBERS WHICH COMPRISES EXTRUDING A MOLTEN FIBERFORMING MATERIAL CONTAINING AT LEAST 90 MOL PERCENT OF POLYETHYLENE TEREPHTHALATE THROUGH A SPINNERET, COOLING THE EXTRUDED MATERIAL UNTIL SOLIDIFIED TO A FIBER, AND PULLING THE EXTRUDED MATERIAL AWAY FROM THE SPINNERET AT A SPINNING SPEED, MEASURED AFTER THE MATERIAL HAS COMPLETELY SOLIDIFIED TO A FIBER IN EXCESS OF 5200 YARDS PER MINUTE AND BELOW SPEEDS WHERE EXCESSIVE FILAMENT BREAKAGE OCCURS, SAID EXTRUDING BEING AT A RATE IN DENYARDS EQUAL TO THE PRODUCT OF SAID SPINNING SPEED AND THE SPUN DENIER DESIRED.
Claim 2
Dependent Claim
94 words
A PRCOESS FOR PRODUCING TENACIOUS AS-SPUN FIBERS WHICH COMPRISES EXTRUDING A MOLTEN FIBERFORMING MATERIAL CONTAINING AT LEAST 90 MOL PERCENT OF POLYETHYLENE TEREPHTHALATE THROUGH A SPINNERET, COOLING THE EXTRUDED MATERIAL UNTIL SOLIDIFIED TO A FIBER, AND PULLING THE EXTRUDED MATERIAL AWAY FROM THE SPINNERET AT A SPINNING SPEED, MEASURED AFTER THE MATERIAL HAS COMPLETELY SOLIDIFIED TO A FIBER IN EXCESS OF 5200 YARDS PER MINUTE AND BELOW SPEEDS WHERE EXCESSIVE FILAMENT BREAKAGE OCCURS, SAID EXTRUDING BEING AT A RATE IN DENYARDS EQUAL TO THE PRODUCT OF SAID SPINNING SPEED AND THE SPUN DENIER DESIRED.
References Cited (Backward Citations)
US2465319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |