US3186833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for reducing copper oxide
Assignee: General Electric Co
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Filing: 1963-01-02
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Granted: 1965-06-01
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Expires: 1983-01-02
Abstract
No abstract record available.
Inventors
- 👤 Robert E Cech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:31
CPC Classifications
C; C01; C01G; C01G3/00; C01G3/02; C22; C22B; C22B15/00; C22B15/0002; C22B15/001; C22B15/0021; C22B15/0023; C22B15/0063; C22B15/0065; C22B15/0078; C01P; C01P2006/00; C01P2006/80; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A PROCESS FOR PRODUCING CUPROUS OXIDE OR COPPER METAL BY REDUCING A COPPER OXIDE FROM THE GROUP CONSISTING OF CUPRIC OXIDE, CUPROUS OXIDE AND MIXTURES THEREOF TO A LOWER VELENCE STATE, THE STEPS OF THE PROCESS COMPRISING: PROVIDING A MIXTURE IN WHICH THE ACTIVE CONSTITUENTS ARE, (A) A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF SULFUR, COPPER SULFIDE, IRON SULFIDE, ZINC SULFIDE, TIN DULFIDE AND LEAD SULFIDE, (B) DAID COPPER OXIDE, AND (C) A CHLORIDIZING AGENT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL CHLORIDES AND ALKALINE EARTH METAL CHLORIDES, AND HEATING THE MIXTURE IN A PROTECTIVE ATMOSPHERE TO AN ELEVATED TEMPERATURE SUFFICIENT T CHEMICALLY REACT THE ACTIVE CONSTITUENTS AND ACHIEVE REDUCTION IN THE VALENCE STATE OF SAID COPPER OXIDE.
Claim 2
Dependent Claim
121 words
A PROCESS FOR PRODUCING CUPROUS OXIDE OR COPPER METAL BY REDUCING A COPPER OXIDE FROM THE GROUP CONSISTING OF CUPRIC OXIDE, CUPROUS OXIDE AND MIXTURES THEREOF TO A LOWER VELENCE STATE, THE STEPS OF THE PROCESS COMPRISING: PROVIDING A MIXTURE IN WHICH THE ACTIVE CONSTITUENTS ARE, (A) A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF SULFUR, COPPER SULFIDE, IRON SULFIDE, ZINC SULFIDE, TIN DULFIDE AND LEAD SULFIDE, (B) DAID COPPER OXIDE, AND (C) A CHLORIDIZING AGENT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL CHLORIDES AND ALKALINE EARTH METAL CHLORIDES, AND HEATING THE MIXTURE IN A PROTECTIVE ATMOSPHERE TO AN ELEVATED TEMPERATURE SUFFICIENT T CHEMICALLY REACT THE ACTIVE CONSTITUENTS AND ACHIEVE REDUCTION IN THE VALENCE STATE OF SAID COPPER OXIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |