US2670273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of metals into metal oxides and hydroxides
Assignee: Individual
•
Filing: 1947-04-10
•
Granted: 1954-02-23
•
Expires: 1967-04-10
Abstract
No abstract record available.
Inventors
- 👤 John E Munn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:37
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/14; C01B13/32; C01B13/322
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
THE METHOD OF MAKING A METAL COMPOUND OF THE GROUP CONSISTING OF AN OXIDE AND HYDROXIDE FROM PIECES OF THE RAW METAL WHICH COMPRISES TUMBLING THE METAL PIECES IN AN ENVIRONMENT CLOSED AGAINST THE ESCAPE OF GAS AND VAPORS DURING THE TUMBLING PROCESS CONTAINING PART LIQUID AND PART GAS SO THAT IN THE TUMBLING PROCESS THE METAL IS ALTERNATELY IMMERSED IN THE LIQUID AND THEN EXPOSED TO THE GAS, THE GAS BEING COMMERCIAL OXYGEN AND THE LIQUID BEING AN AMMONIACAL SOLUTION WHICH CORRODES THE METAL, THE METAL BEING A METAL OF THE GROUP CONSISTING OF COPPER, NICKEL, COBALT, ZINC, IRON, CADMIUM AND SILVER SUPPLYING ADDITIONAL OXYGEN TO THE ENVIRONMENT AS THE OXYGEN IS CONSUMED THEREFROM AND CONTINUOUSLY DURING SUCH OPERATION USING THE SAME AMMONIACAL SOLUTION AND PRODUCING DURING SUCH OPERATION A METALLIC COMPOUND OF SAID GROUP CONSISTING OF THE OXIDE AND HYDROXIDE FROM THE METAL SO TREATED, THE AMMONIA IN THE AMMONIACAL SOLUTION REMAINING SUBSTANTIALLY FIXED AS SUCH IN THE SOLUTION THROUGHOUT THE PROCESS AND RECOVERING SUCH METALLIC COMPOUND SO FORMED.
Claim 2
Independent Claim
171 words
THE METHOD OF MAKING A METAL COMPOUND OF THE GROUP CONSISTING OF AN OXIDE AND HYDROXIDE FROM PIECES OF THE RAW METAL WHICH COMPRISES TUMBLING THE METAL PIECES IN AN ENVIRONMENT CLOSED AGAINST THE ESCAPE OF GAS AND VAPORS DURING THE TUMBLING PROCESS CONTAINING PART LIQUID AND PART GAS SO THAT IN THE TUMBLING PROCESS THE METAL IS ALTERNATELY IMMERSED IN THE LIQUID AND THEN EXPOSED TO THE GAS, THE GAS BEING COMMERCIAL OXYGEN AND THE LIQUID BEING AN AMMONIACAL SOLUTION WHICH CORRODES THE METAL, THE METAL BEING A METAL OF THE GROUP CONSISTING OF COPPER, NICKEL, COBALT, ZINC, IRON, CADMIUM AND SILVER SUPPLYING ADDITIONAL OXYGEN TO THE ENVIRONMENT AS THE OXYGEN IS CONSUMED THEREFROM AND CONTINUOUSLY DURING SUCH OPERATION USING THE SAME AMMONIACAL SOLUTION AND PRODUCING DURING SUCH OPERATION A METALLIC COMPOUND OF SAID GROUP CONSISTING OF THE OXIDE AND HYDROXIDE FROM THE METAL SO TREATED, THE AMMONIA IN THE AMMONIACAL SOLUTION REMAINING SUBSTANTIALLY FIXED AS SUCH IN THE SOLUTION THROUGHOUT THE PROCESS AND RECOVERING SUCH METALLIC COMPOUND SO FORMED.
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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) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |