US2579551A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic process and apparatus for making copper dust
Assignee: Individual
•
Filing: 1947-07-28
•
Granted: 1951-12-25
•
Expires: 1967-07-28
Abstract
No abstract record available.
Inventors
- 👤 Corsini Neri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:21
CPC Classifications
C; C01; C01G; C01G3/00; C01G3/10; C25; C25C; C25C5/00; C25C5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
THE PROCESS OF PREPARING A COPPER DUST SUITABLE FOR CONVERSION TO COPPER SULPHATE WHICH COMPRISES ELECTROLYZING AN ELECTROLYTE CONSISTING OF FREE SULFURIC ACID AND CUPRIC IONS WITH A METAL LIC COPPER ANODE, THE COPPER BEING DEPOSITED AS A FINE DUST ON A CATHODE, INTERPOSING A PERFORATED LEAD PLATE ANODE BETWEEN THE COPPER ANODE AND THE CATHODE TO MAINTAIN THE CONCENTRATION OF CUPRIC IONS IN THE ELECTROLYTE SUBSTANTIALLY CONSTANT THROUGHOUT THE ELECTROLYSIS, WHEREBY THE RATE OF ANODIC DISSOLUTION OF THE COPPER IS REGULATED TO BE SUBSTANTIALLY EQUAL TO THE RATE OF CATHODIC DEPOSITION OF THE COPPER DUST, AND COLLECTING THE PRECIPITATED COPPER DUST.
Claim 2
Dependent Claim
102 words
THE PROCESS OF PREPARING A COPPER DUST SUITABLE FOR CONVERSION TO COPPER SULPHATE WHICH COMPRISES ELECTROLYZING AN ELECTROLYTE CONSISTING OF FREE SULFURIC ACID AND CUPRIC IONS WITH A METAL LIC COPPER ANODE, THE COPPER BEING DEPOSITED AS A FINE DUST ON A CATHODE, INTERPOSING A PERFORATED LEAD PLATE ANODE BETWEEN THE COPPER ANODE AND THE CATHODE TO MAINTAIN THE CONCENTRATION OF CUPRIC IONS IN THE ELECTROLYTE SUBSTANTIALLY CONSTANT THROUGHOUT THE ELECTROLYSIS, WHEREBY THE RATE OF ANODIC DISSOLUTION OF THE COPPER IS REGULATED TO BE SUBSTANTIALLY EQUAL TO THE RATE OF CATHODIC DEPOSITION OF THE COPPER DUST, AND COLLECTING THE PRECIPITATED COPPER DUST.
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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) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |