US3565729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-woven fabric
Assignee: Carl Freudenberg KG
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Filing: 1969-05-29
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Granted: 1971-02-23
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Expires: 1989-05-29
Abstract
Abstract APPARATUS FOR PRODUCING NON-WOVEN FIBROUS FLEECES. THE APPARATUS INCLUDES AT LEAST ONE LINEARLY ALIGNED ROW OF INDIVIDUAL SPINNING ORIFICES, EACH O F WHICH IS ADAPTED TO HAVE A SYNTHETIC FIBER FILAMENT SPUN THEREFROM; MEANS FOR IMPINGING GENERALLY PARALLEL AIR STREAMS ON BOTH SIDES OF THE RANK OF FILAMENTS SO SPUN; A MULTIPLICITY OF CHANNEL MEANS, EACH INDIVIDUALLY ASSOCIATED WITH A SINGLE FILAMENT, WHICH FILAMENT PASSES THROUGH THE CHANNEL AND IS DRAWN THEREIN BY THE AIR STREAM; AND FLEECE FORM MEANS UPON WHICH THE FILAMENTS ARE LAID AFTER THEY EMERGE FROM THE CHANNELS AND UPON WHICH THE FILAMENTS FORM A NON-WOVEN FLEECE.
Inventors
- 👤 Ludwig Hartmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/005; D04H3/009; A; A24; A24D; A24D3/00; A24D3/02; A24D3/0229; A24D3/0237; D01; D01D; D01D5/00; D01D5/253; D04H3/007; D04H3/015; D04H3/08; D04H3/14; D04H3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |