Patent US3562771A successfully refreshed from Google Patents.
US3562771A
Expired / Lapsed
US
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Process for preparation of continuous filament nonwoven webs
Assignee: EIDP Inc
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Filing: 1968-08-29
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Granted: 1971-02-09
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Expires: 1988-08-29
Abstract
Abstract IN A PROCESS FOR PREPARING A NONWOVEN WEB WHEREIN ELECTROSTATICALLY CHARGED CONTINUOUS FILAMENTS ARE FORWARDED BY JETS TO A RECEIVING AREA WHICH COMPRISES A MOVING FORAMINOUS RECEIVER COVERING A SUCTION LAYDOWN ZONE AT LEAST AT THE POINT OF INITIAL FILAMENT DEPOSITION, THE FILAMENTS ARE TREATED WITH WATER IN THE FORWARDING JETS AND/OR IN THE RECEIVING AREA TO IMPROVE THE PINNING OF THE WEB TO THE FORMINOUS RECEIVER.
Inventors
- 👤 Anton F Fridrichsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:22
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/08; D04H3/16
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |