Patent US3329264A successfully refreshed from Google Patents.
US3329264A
Expired / Lapsed
US
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Electrostatic separation of long from short fibers
Assignee: Glanzstoff AG
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Filing: 1964-06-19
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Granted: 1967-07-04
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Expires: 1984-06-19
Abstract
No abstract record available.
Inventors
- 👤 Arnold Walter
- 👤 Ostertag Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:39
CPC Classifications
D; D04; D04H; D04H11/00; B; B03; B03C; B03C7/00; B03C7/02; B03C7/023; B05; B05C; B05C19/00; B05C19/001; B05C19/002
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
72 words
APPARATUS FOR SORTING OF FIBERS OF DIFFERENT LENGTHS WHICH COMPRISES AN ENCLOSURE HAVING A SCREEN ON ONE SIDE THEREOF, MEANS FOR CHARGING SAID SCREEN WITH A HIGH VOLTAGE, MEANS FOR SUPPLYING FIBERS TO BE SORTED TO SAID ENCLOSURE, A MEMBER OUTSIDE SAID ENCLOSURE OPPOSITE SAID SCREEN AND SPACED THEREFROM TO PROVIDE AN AIR GAP BETWEEN THE SCREEN AND THE SURFACE OF SAID MEMBER OPPOSITE SAID SCREEN, MEANS FOR GROUNDING SAID SURFACE, A
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |