Patent US2980492A successfully refreshed from Google Patents.
US2980492A
Expired / Lapsed
US
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Process for preparing textile yarns
Assignee: EIDP Inc
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Filing: 1958-05-27
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Granted: 1961-04-18
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Expires: 1978-05-27
Abstract
No abstract record available.
Inventors
- 👤 William H Jamieson
- 👤 Cecil E Reese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:17
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/18; Y; Y10; Y10S; Y10S264/00; Y10S264/26; Y10S264/28; Y10S57/00; Y10S57/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A PROCESS FOR PREPARING TEXTILE YARN HAVING THE PROPERTY OF BECOMING BULKY WHEN HEATED TO A TEMPERATURE FROM ABOUT 70*C. TO ABOUT 220*C. WHICH COMPRISES FORMING A FILAMENT BUNDLE CONSISTING OF AT LEAST TWO SPECIES OF CONTINUOUS ESSENTIALLY STRAIGHT FILAMENTS OF EQUAL LENGTH BY EXTRUDING A MOLTEN LINEAR CONDENSATION POLYESTER THROUGH A PLURALITY OF ORIFICES AT UNEQUAL RATES OF FLOW AND FORWARDING SAID FILAMENTS AS A CONTINUOUS FILAMENT BUDNEL, THE RATE OF FLOW THROUGH SAID ORIFICES AND THE RATE OF FORWARDING BEING ADJUSTED SO THT THE FIRST OF SAID SPECIES HAS A DENIER OF NOT GREATER THAN ABOUT 8 AND ANOTHER OF SAID SPECIES HAS A DENIER AT LEAST 1.25 TIMES THE DENIER OF SAID FIRST SPECIES, MAINTAINING BOTH OF SAID SPECIES AS SEPARATE ESSENTIALLY STRAIGHT CONTINUOUS FILAMENTARY STRUCTURES THROUGHOUT SAID FORWARDING STEP.
Claim 2
Dependent Claim
133 words
A PROCESS FOR PREPARING TEXTILE YARN HAVING THE PROPERTY OF BECOMING BULKY WHEN HEATED TO A TEMPERATURE FROM ABOUT 70*C. TO ABOUT 220*C. WHICH COMPRISES FORMING A FILAMENT BUNDLE CONSISTING OF AT LEAST TWO SPECIES OF CONTINUOUS ESSENTIALLY STRAIGHT FILAMENTS OF EQUAL LENGTH BY EXTRUDING A MOLTEN LINEAR CONDENSATION POLYESTER THROUGH A PLURALITY OF ORIFICES AT UNEQUAL RATES OF FLOW AND FORWARDING SAID FILAMENTS AS A CONTINUOUS FILAMENT BUDNEL, THE RATE OF FLOW THROUGH SAID ORIFICES AND THE RATE OF FORWARDING BEING ADJUSTED SO THT THE FIRST OF SAID SPECIES HAS A DENIER OF NOT GREATER THAN ABOUT 8 AND ANOTHER OF SAID SPECIES HAS A DENIER AT LEAST 1.25 TIMES THE DENIER OF SAID FIRST SPECIES, MAINTAINING BOTH OF SAID SPECIES AS SEPARATE ESSENTIALLY STRAIGHT CONTINUOUS FILAMENTARY STRUCTURES THROUGHOUT SAID FORWARDING STEP.
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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) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |