Patent US3256985A successfully refreshed from Google Patents.
US3256985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slotted cylindrical electrode electrostatic separator
Assignee: Individual
•
Filing: 1961-12-04
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Granted: 1966-06-21
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Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 Carpenter James Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:03
CPC Classifications
B; B03; B03C; B03C7/00; B03C7/02; B03C7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
AN APPARATUS FOR SEPARATING ELONGATED PARTICLES FROM SUBSTANTIALLY NON-ELONGATED PARTICLES COMPRISING AN UPRIGHT FLAT ELECTRODE, AN UPRIGHT GENERALLY CYLINDRICAL HOLLOW ELECTRODE SPACED FROM SAID FLAT ELECTRODE TO PERMIT AN UNSEPARATED MIXTURE OF ELONGATED AND SUBSTANTIALLY NON-ELONGATED PARTICLES TO FALL FREELY BY GRAVITY IN THE SPACE THEREBETWEEN, SAID HOLLOW ELECTRODE HAVING A LONGITUDINAL SLOT EXTENDING THROUGH ITS SIDE WALL NARROWER THAN AND FACING FLAT ELECTRODE, AND MEANS TO ELECTRI-
Claim 2
Independent Claim
68 words
AN APPARATUS FOR SEPARATING ELONGATED PARTICLES FROM SUBSTANTIALLY NON-ELONGATED PARTICLES COMPRISING AN UPRIGHT FLAT ELECTRODE, AN UPRIGHT GENERALLY CYLINDRICAL HOLLOW ELECTRODE SPACED FROM SAID FLAT ELECTRODE TO PERMIT AN UNSEPARATED MIXTURE OF ELONGATED AND SUBSTANTIALLY NON-ELONGATED PARTICLES TO FALL FREELY BY GRAVITY IN THE SPACE THEREBETWEEN, SAID HOLLOW ELECTRODE HAVING A LONGITUDINAL SLOT EXTENDING THROUGH ITS SIDE WALL NARROWER THAN AND FACING FLAT ELECTRODE, AND MEANS TO ELECTRI-
References Cited (Backward Citations)
US1995790A
Cited
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US2782923A
Cited
US2706044A
Cited
US2839189A
Cited
US2803344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |