US2987797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheath and core textile filament
Assignee: EIDP Inc
•
Filing: 1956-10-08
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Granted: 1961-06-13
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Expires: 1976-10-08
Abstract
No abstract record available.
Inventors
- 👤 Alvin L Breen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:44
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; D01D; D01D5/00; D01D5/28; D01D5/30; D01D5/34; Y; Y10; Y10S; Y10S264/00; Y10S264/26; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2924; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A SYNTHETIC, SELF-CRIMPING FILAMENT OF FIBER-FORMING MATERIAL SELECTED FROM THE GROUP CONSISTING OF CONDENSATION AND VINYL ADDITION POLYMERS, SAID FILAMENT COMPRISING A KIDNEY-SHAPED CORE AND A SHEATH DISPOSED ABOUT THE SAID CORE, SAID SHEATH AT ITS POINT OF MINIMUM COVERAGE OF SAID CORE HAVING A THICKNESS OF AT LEAST 1% OF THE DIAMETER OF THE FILAMENT, THE CROSS-SECTIONAL AREA OF SAID CORE COMPRISING BETWEEN 40-55% INCLUSIVE OF THE TOTAL CROSS-SECTIONAL AREA OF SAID FILAMENT, THE CROSSSECTIONAL AREA OF THAT PART OF SAID CORE THAT IS LOCATED IN THE HALF-CROSS SECTION OF SAID FILAMENT CONTAINING THE MAXIMUM AMOUNT OF CORE MATERIAL COMPRISING AT LEAST 70% OF THE HALF-CROSS-SECTIONAL AREA OF SAID FILAMENT AND AT LEAST 80% OF THE TOTAL CROSS-SECTIONAL AREA OF THE CORE.
Claim 2
Dependent Claim
123 words
A SYNTHETIC, SELF-CRIMPING FILAMENT OF FIBER-FORMING MATERIAL SELECTED FROM THE GROUP CONSISTING OF CONDENSATION AND VINYL ADDITION POLYMERS, SAID FILAMENT COMPRISING A KIDNEY-SHAPED CORE AND A SHEATH DISPOSED ABOUT THE SAID CORE, SAID SHEATH AT ITS POINT OF MINIMUM COVERAGE OF SAID CORE HAVING A THICKNESS OF AT LEAST 1% OF THE DIAMETER OF THE FILAMENT, THE CROSS-SECTIONAL AREA OF SAID CORE COMPRISING BETWEEN 40-55% INCLUSIVE OF THE TOTAL CROSS-SECTIONAL AREA OF SAID FILAMENT, THE CROSSSECTIONAL AREA OF THAT PART OF SAID CORE THAT IS LOCATED IN THE HALF-CROSS SECTION OF SAID FILAMENT CONTAINING THE MAXIMUM AMOUNT OF CORE MATERIAL COMPRISING AT LEAST 70% OF THE HALF-CROSS-SECTIONAL AREA OF SAID FILAMENT AND AT LEAST 80% OF THE TOTAL CROSS-SECTIONAL AREA OF THE CORE.
References Cited (Backward Citations)
GB514638A
Cited
DE744112C
Cited
US2327872A
Cited
US2428046A
Cited
US2517694A
Cited
US2674025A
Cited
US2612679A
Cited
US2716049A
Cited
FR1124921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |