US3094411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the extraction of zinc from its ores and oxides
Assignee: Individual
•
Filing: 1959-04-08
•
Granted: 1963-06-18
•
Expires: 1979-04-08
Abstract
No abstract record available.
Inventors
- 👤 Bernard H Triffleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:16
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A METHOD FOR PRODUCING COPPER-BASED ZINC ALLOYS COMPRISING THE STEPS OF (1) FORMING AN INTIMATE MIXTURE OF ZINC OXIDE MATERIAL AND AT LEAST SUFFICIENT CARBON TO REDUCE THE ZINC OXIDE TO ZINC, (2) HEATING SAID MIXTURE BY SUBMERGING THE MIXTURE BELOW THE SURFACE OF A PREVIOUSLY PREPARED BODY CONSISTING ESSENTIALLY OF MOLTEN COPPER, AND (3) THEN INDRIECTLY HEATING SAID MOLTEN BODY AT A TEMPERATURE BETWEEN 1900* AND 2200*F. FOR AT LEAST 10 MINUTES TO PERMIT THE CARBON TO REDUCE THE ZINC OXIDE TO ZINC AND FOR THE ZINC TO FORM WITH THE COPPER A BRASS ALLOY CONTAINING UP TO 16% AINC, SAID REDUCTION REACTION AND THE FORMATION OF SAID BRASS ALLOY TAKING PLACE ENTIRELY BELOW THE SURFACE OF SAID BODY OF MOLTEN COPPER.
Claim 2
Independent Claim
123 words
A METHOD FOR PRODUCING COPPER-BASED ZINC ALLOYS COMPRISING THE STEPS OF (1) FORMING AN INTIMATE MIXTURE OF ZINC OXIDE MATERIAL AND AT LEAST SUFFICIENT CARBON TO REDUCE THE ZINC OXIDE TO ZINC, (2) HEATING SAID MIXTURE BY SUBMERGING THE MIXTURE BELOW THE SURFACE OF A PREVIOUSLY PREPARED BODY CONSISTING ESSENTIALLY OF MOLTEN COPPER, AND (3) THEN INDRIECTLY HEATING SAID MOLTEN BODY AT A TEMPERATURE BETWEEN 1900* AND 2200*F. FOR AT LEAST 10 MINUTES TO PERMIT THE CARBON TO REDUCE THE ZINC OXIDE TO ZINC AND FOR THE ZINC TO FORM WITH THE COPPER A BRASS ALLOY CONTAINING UP TO 16% AINC, SAID REDUCTION REACTION AND THE FORMATION OF SAID BRASS ALLOY TAKING PLACE ENTIRELY BELOW THE SURFACE OF SAID BODY OF MOLTEN COPPER.
References Cited (Backward Citations)
US291410A
Cited
US1331740A
Cited
US1728681A
Cited
US1659445A
Cited
US2000833A
Cited
US2070101A
Cited
US2264288A
Cited
US2426389A
Cited
US2598745A
Cited
US2776881A
Cited
US2920951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |