US3563838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous filament nonwoven web
Assignee: EIDP Inc
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Filing: 1968-07-09
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Granted: 1971-02-16
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Expires: 1988-07-09
Abstract
Abstract THE INVENTION RELATES TO CONTINUOUS FILAMENT NONWOVEN WEBS HAVING A SPECIFIED FILAMENT DIRECTIONALITY. THE CONTINUOUS SYNTHETIC FILAMENTS ARE PREFERENTALLY ALIGNED IN DIRECTIONS APPROXIMATELY PARALLEL OR PERPENDICULAR TO THE FABRIC LENGTH DIRECTION, AND EXTEND FOR A DISTANCE GREATER THAN 7 INCHES IN THAT DIRECTION. SUCH WEBS ARE PARTICULARLY USEFUL AS PRIMARY BACKINGS FOR TUFTED CARPETS SINCE THEY OFFER EXCEPTIONALLY HIGH RESISTANCE TO WIDTH LOSS ON STRETCHING COUPLED WITH HIGH TEAR STRENGTH.
Inventors
- 👤 Clifton Vedantus Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:40
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/02; D04H3/03; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23979; Y10T428/23986; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/2419; Y10T428/24215; Y10T428/24231; Y10T428/24264; Y10T428/26; Y10T442/00; Y10T442/60; Y10T442/643
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |