Patent US3249669A successfully refreshed from Google Patents.
US3249669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making composite polyester filaments
Assignee: EIDP Inc
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Filing: 1964-03-16
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Granted: 1966-05-03
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Expires: 1984-03-16
Abstract
No abstract record available.
Inventors
- 👤 William H Jamieson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:37
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/253; Y; Y10; Y10S; Y10S57/00; Y10S57/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A PROCESS FOR THE FORMATION OF A COMPOSITE CONTINUOUS MULTIFILAMENT YARN HAVING A UNIFORM APPEARANCE IN A DYE FABRIC WHICH COMPRISES SHAPING A MOLTEN LINEAR POLYESTER BY EXTRUDING THE POLYESTER THROUGH A SPINNERET TO FORM A PLURALITY OF CONTINUOUS FILAMENTS, SAID SPINNERET CONTAINING A PLURALITY OF ORIFICEES HAVING AT LEAST TWO DIFFERENT SHAPES, AT LEAST ABOUT 25% OF THE ORIFICES HAVING A SHAPE FACTOR OF AT LEAST ABOUT 18 AND NOT MORE THAN ABOUT 75% OF THE ORIFICES HAVING THE SAME SHAPE, WITH THE PROVISO THAT WHEN ALL THE ORIFICS AHAVE THE SAME NUMBER OF SIDES THERE IS A RATIO OF AT LEAST ABOUT 1.4 BETWEEN THE SHAPE FACTORS OF THE ORIFICES HAVING THE HIGHEST AND LOWEST SHAPE FACTORS, QUENCHING THE MOLTEN FILAMENTS TO SOLIDIFY THEM IN ESSENTIALLY THE SAME CROSS-SECTION AS THE SHAPE OF THE ORIFICES FROM WHICH THEY ARE EXTRUDED, GATHERING THE FILAMENTS TOGETHER IN THE FORM OF A YARN AND ORIENTING THEM, AND WINDING THE RESULTING YARN.
Claim 2
Dependent Claim
160 words
A PROCESS FOR THE FORMATION OF A COMPOSITE CONTINUOUS MULTIFILAMENT YARN HAVING A UNIFORM APPEARANCE IN A DYE FABRIC WHICH COMPRISES SHAPING A MOLTEN LINEAR POLYESTER BY EXTRUDING THE POLYESTER THROUGH A SPINNERET TO FORM A PLURALITY OF CONTINUOUS FILAMENTS, SAID SPINNERET CONTAINING A PLURALITY OF ORIFICEES HAVING AT LEAST TWO DIFFERENT SHAPES, AT LEAST ABOUT 25% OF THE ORIFICES HAVING A SHAPE FACTOR OF AT LEAST ABOUT 18 AND NOT MORE THAN ABOUT 75% OF THE ORIFICES HAVING THE SAME SHAPE, WITH THE PROVISO THAT WHEN ALL THE ORIFICS AHAVE THE SAME NUMBER OF SIDES THERE IS A RATIO OF AT LEAST ABOUT 1.4 BETWEEN THE SHAPE FACTORS OF THE ORIFICES HAVING THE HIGHEST AND LOWEST SHAPE FACTORS, QUENCHING THE MOLTEN FILAMENTS TO SOLIDIFY THEM IN ESSENTIALLY THE SAME CROSS-SECTION AS THE SHAPE OF THE ORIFICES FROM WHICH THEY ARE EXTRUDED, GATHERING THE FILAMENTS TOGETHER IN THE FORM OF A YARN AND ORIENTING THEM, AND WINDING THE RESULTING YARN.
References Cited (Backward Citations)
US1902953A
Cited
GB401160A
Cited
US2637893A
Cited
GB710087A
Cited
US2750653A
Cited
US2959839A
Cited
US2945739A
Cited
FR1169006A
Cited
US2980492A
Cited
FR1265227A
Cited
US3156085A
Cited
US3095607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |