US3334973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of percolation leaching of ores exhibiting a significant heat of solution
Assignee: Kerr McGee Corp
•
Filing: 1964-02-25
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Granted: 1967-08-08
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Expires: 1984-02-25
Abstract
No abstract record available.
Inventors
- 👤 Mayer B Goren
- 👤 Adolph E Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:11
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/08; C01B35/10; B; B01; B01F; B01F21/00; B01F21/20; B01F35/00; B01F35/90; B01F35/91; B01F35/92; C01B35/06; C01B35/12; C01D; C01D3/00; C01D3/04; C01D3/08; C01D9/00; C01D9/02; C22; C22B; C22B3/00; C22B3/04; B01F2035/99; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN A PROCESS FOR LEACHING SOLID MATERIALS AMENABLE TO PERCOLATION LEACHING WHEREIN A BED OF THE MATERIAL CONTAINING A DESIRED SOLVENT SOLUBLE CONSTITUENT IS PERCOLATION LEACHED WITH A SOLVENT LIQUID AT ELEVATED TEMPERATURE TO PRODUCE AN EFFLUENT CONTAINING THE DESIRED SOLUBLE CONSTITUENT, THE DESIRED SOLVENT SOLUBLE CONSTITUENT HAVING A SINGIFICANT HEAT OF SOLUTION AND THE BED EXHIBITING A SHARP TEMPERATURE CHANGE IN A ZONE OF ACTIVE LEACHING, WHICH ZONE PROGRESSES DOWNWARDLY IN THE SAID BED OF MATERIAL DURING THE PERCOLATION LEACHING THEREOF, THE IMPROVEMENT COMPRISING DETERMINING WHEN ACTIVE LEACHING IS OCCURRING AT A GIVEN DEPTH IN THE BED OF MATERIAL BY MEASURING THE TEMPERATURE OF THE SOLVENT LIQUID AT THE DESIRED DEPTH OVER A PERIOD OF TIME TO OBTAIN A SERIES OF TEMPERATURE READINGS, THE TEMPERATURE BEING MEASURED PRIOR TO THE OCCURRENCE OF ACTIVE LEACHING AT THE SAID DEPTH AND THE TEMPERATURE MEASUREMENT BEING CONTINUED UNTIL A SHARP CHANGE IN THE TEMPERATURE IS NOTED, THE SOL-
Claim 2
Dependent Claim
156 words
IN A PROCESS FOR LEACHING SOLID MATERIALS AMENABLE TO PERCOLATION LEACHING WHEREIN A BED OF THE MATERIAL CONTAINING A DESIRED SOLVENT SOLUBLE CONSTITUENT IS PERCOLATION LEACHED WITH A SOLVENT LIQUID AT ELEVATED TEMPERATURE TO PRODUCE AN EFFLUENT CONTAINING THE DESIRED SOLUBLE CONSTITUENT, THE DESIRED SOLVENT SOLUBLE CONSTITUENT HAVING A SINGIFICANT HEAT OF SOLUTION AND THE BED EXHIBITING A SHARP TEMPERATURE CHANGE IN A ZONE OF ACTIVE LEACHING, WHICH ZONE PROGRESSES DOWNWARDLY IN THE SAID BED OF MATERIAL DURING THE PERCOLATION LEACHING THEREOF, THE IMPROVEMENT COMPRISING DETERMINING WHEN ACTIVE LEACHING IS OCCURRING AT A GIVEN DEPTH IN THE BED OF MATERIAL BY MEASURING THE TEMPERATURE OF THE SOLVENT LIQUID AT THE DESIRED DEPTH OVER A PERIOD OF TIME TO OBTAIN A SERIES OF TEMPERATURE READINGS, THE TEMPERATURE BEING MEASURED PRIOR TO THE OCCURRENCE OF ACTIVE LEACHING AT THE SAID DEPTH AND THE TEMPERATURE MEASUREMENT BEING CONTINUED UNTIL A SHARP CHANGE IN THE TEMPERATURE IS NOTED, THE SOL-
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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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |