US3219739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing convoluted fibers
Assignee: EIDP Inc
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Filing: 1963-05-27
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Granted: 1965-11-23
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Expires: 1983-05-27
Abstract
No abstract record available.
Inventors
- 👤 Breen Alvin Leonard
- 👤 Covell Ralph Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:20
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/253; D01D5/22; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
THE PROCESS WHICH COMPRISES (1) EXTRUDING A MOLTEN SYNTHETIC LINEAR POLYESTER THROUGH AN ORIFICE HAVING AT LEAST ONE ELONGATED SLOT HAVING A WIDTH TO THICKNESS RATIO OF AT LEAST THREE PROJECTING FROM AN APERTURE HAVING A WIDTH GREATER THAN THE WIDTH OF SAID SLOT TO FORM A FILAMENT HAVING AT LEAST ONE FIN EXTENDING FROM A STEM PORTION, (2) QUENCHING SAID FILAMENT BY DIRECTING A FLOW OF QUENCHING GAS ACROSS SAID FILAMENT NEAR SAID ORIFICE AT A VELOCITY OF AT LEAST 150 F.P.M. X (1200/FORWARDING SPEED)(**2) WHERE THE FORWARDING SPEED IS EXPRESSED IN YARDS PER MINUTE, (3) FORWARDING SAID FILAMENT AT A SPEED BETWEEN ABOUT 1,000 AND 3,400 YARDS PER MINUTE AND
Claim 2
Dependent Claim
112 words
THE PROCESS WHICH COMPRISES (1) EXTRUDING A MOLTEN SYNTHETIC LINEAR POLYESTER THROUGH AN ORIFICE HAVING AT LEAST ONE ELONGATED SLOT HAVING A WIDTH TO THICKNESS RATIO OF AT LEAST THREE PROJECTING FROM AN APERTURE HAVING A WIDTH GREATER THAN THE WIDTH OF SAID SLOT TO FORM A FILAMENT HAVING AT LEAST ONE FIN EXTENDING FROM A STEM PORTION, (2) QUENCHING SAID FILAMENT BY DIRECTING A FLOW OF QUENCHING GAS ACROSS SAID FILAMENT NEAR SAID ORIFICE AT A VELOCITY OF AT LEAST 150 F.P.M. X (1200/FORWARDING SPEED)(**2) WHERE THE FORWARDING SPEED IS EXPRESSED IN YARDS PER MINUTE, (3) FORWARDING SAID FILAMENT AT A SPEED BETWEEN ABOUT 1,000 AND 3,400 YARDS PER MINUTE AND
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |