Patent US2223017A successfully refreshed from Google Patents.
Patent US3145133A successfully refreshed from Google Patents.
US3145133A
Expired / Lapsed
US
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Polyamide filament
Assignee: EIDP Inc
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Filing: 1962-12-21
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Granted: 1964-08-18
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 Barton Bruce Arlyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:39
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; D01F8/12; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T442/00; Y10T442/40; Y10T442/444
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A DRAWN, CRIMPABLE, COMPOSITE FILAMENT COMPRISING TWO CONTINUOUS, ADHERENT, POLYAMIDE COMPONENTS ADAPTED TO SHRINK DIFFERENTIALLY AND THEREBY CRIMP AS THE FILAMENT FIRST COOLS FROM AN ELEVATED TEMPERATURE, ONE OF SAID COMPONENTS BEING ADAPTED TO ELONGATE REVERSIBLY AND THE OTHER TO SHRING REVERSIBLY IN SUBSEQUENT HEATINGCOOLING CYCLES, SAID ONE COMPONENT BEING OF FIBER-FORMING MOLECULAR WEIGHT AND ALSO HAVING AN INITIAL SHRINKAGE POTENTIAL RELATIVELY HIGHER THAN THAT OF THE OTHER COMPONENT.
Claim 2
Dependent Claim
69 words
A DRAWN, CRIMPABLE, COMPOSITE FILAMENT COMPRISING TWO CONTINUOUS, ADHERENT, POLYAMIDE COMPONENTS ADAPTED TO SHRINK DIFFERENTIALLY AND THEREBY CRIMP AS THE FILAMENT FIRST COOLS FROM AN ELEVATED TEMPERATURE, ONE OF SAID COMPONENTS BEING ADAPTED TO ELONGATE REVERSIBLY AND THE OTHER TO SHRING REVERSIBLY IN SUBSEQUENT HEATINGCOOLING CYCLES, SAID ONE COMPONENT BEING OF FIBER-FORMING MOLECULAR WEIGHT AND ALSO HAVING AN INITIAL SHRINKAGE POTENTIAL RELATIVELY HIGHER THAN THAT OF THE OTHER COMPONENT.
References Cited (Backward Citations)
US2931091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |