US3308946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sink float method of classifying wet flocculated solid particles
Assignee: ISRAEL MINING IND INST FOR RES
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Filing: 1963-11-05
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Granted: 1967-03-14
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Expires: 1983-11-05
Abstract
No abstract record available.
Inventors
- 👤 Mitzmager Abraham
- 👤 Mizrahi Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:57
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/28; B03B5/30; B03B5/32; B03B5/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A METHOD FOR THE SINK-FLOAT CLASSIFICATION OF GRANULAR SOLID MATERIALS COMPOSED OF AT LEAST TWO FRACTIONS WHICH, IN A WATER-WET CONDITION, HAVE DIFFERENT APPARENT SPECIFIC GRAVITIES, COMPRISING THE STEPS OF: PRODUCING A DISPERSION OF SAID GRANULAR MATERIAL IN A WATER-WET CONDITION AND FLOCCULATED STATE IN AN ORGANIC LIQUID HAVING A SPECIFIC GRAVITY INTERMEDIATE BETWEEN THE APPARENT SPECIFIC GRAVITIES OF SAID FRACTIONS, SAID FRACTIONS BEING INCAPABLE OF BEING SEPARATED FROM EACH OTHER IN SAID ORGANIC LIQUID IN THE NATURAL GRAVITATIONAL FIELD OF THE PLACE OF OPERATION, SUBJECTING SAID DISPERSION TO SINK-FLOAT SEPARATION IN A CYCLONE, UNDER CONDITIONS OF A GRAVITATIONAL FIELD INCREASED IN RELATION TO THE NATURAL GRAVITATIONAL FIELD OF THE PLACE OF OPERATION AND SEPARATELY COLLECTING SAID FRACTIONS OF DIFFERENT APPARENT SPECIFIC GRAVITY.
Claim 2
Independent Claim
123 words
A METHOD FOR THE SINK-FLOAT CLASSIFICATION OF GRANULAR SOLID MATERIALS COMPOSED OF AT LEAST TWO FRACTIONS WHICH, IN A WATER-WET CONDITION, HAVE DIFFERENT APPARENT SPECIFIC GRAVITIES, COMPRISING THE STEPS OF: PRODUCING A DISPERSION OF SAID GRANULAR MATERIAL IN A WATER-WET CONDITION AND FLOCCULATED STATE IN AN ORGANIC LIQUID HAVING A SPECIFIC GRAVITY INTERMEDIATE BETWEEN THE APPARENT SPECIFIC GRAVITIES OF SAID FRACTIONS, SAID FRACTIONS BEING INCAPABLE OF BEING SEPARATED FROM EACH OTHER IN SAID ORGANIC LIQUID IN THE NATURAL GRAVITATIONAL FIELD OF THE PLACE OF OPERATION, SUBJECTING SAID DISPERSION TO SINK-FLOAT SEPARATION IN A CYCLONE, UNDER CONDITIONS OF A GRAVITATIONAL FIELD INCREASED IN RELATION TO THE NATURAL GRAVITATIONAL FIELD OF THE PLACE OF OPERATION AND SEPARATELY COLLECTING SAID FRACTIONS OF DIFFERENT APPARENT SPECIFIC GRAVITY.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |