Patent US2495457A successfully refreshed from Google Patents.
US2495457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating cathodes for electrowinning manganese
Assignee: Crimora Res and Dev Corp
•
Filing: 1945-01-16
•
Granted: 1950-01-24
•
Expires: 1965-01-16
Abstract
No abstract record available.
Inventors
- 👤 James H Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:39
CPC Classifications
C; C25; C25C; C25C7/00; C25C7/06; C25C7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN THE METHOD OF ELECTROWINNING MANGANESE FROM AN ALKALINE ELECTROLYTE AND EMPLOYING STAINLESS STEEL CATHODE PLATES; THE STEP WHICH CONSISTS IN POLISHING AND CLEANSING THE SURFACES OF THE CATHODES; THEN COATING THE CLEANSED SURFACES WITH VERY THIN ADHERENT FILMS OF A DILUTE SOLUTION OF ALKALI SILICATE; REMOVING ANY EXCESS SILICATE WHICH DOES NOT READILY ADHERE TO THE SURFACES: SUBMERGING THE FILM-COATED CATHODES IN THE ELECTROLYTE; AND DEPOSITING THE METAL THEREON WITHOUT DESTROYING THE FILMS TO FACILITATE REMOVAL OF THE METAL AND ELIMINATE THE NECESSITY OF BUFFING AND POLISHING THE CATHODES WHEN THEY ARE USED AGAIN.
Claim 2
Dependent Claim
95 words
IN THE METHOD OF ELECTROWINNING MANGANESE FROM AN ALKALINE ELECTROLYTE AND EMPLOYING STAINLESS STEEL CATHODE PLATES; THE STEP WHICH CONSISTS IN POLISHING AND CLEANSING THE SURFACES OF THE CATHODES; THEN COATING THE CLEANSED SURFACES WITH VERY THIN ADHERENT FILMS OF A DILUTE SOLUTION OF ALKALI SILICATE; REMOVING ANY EXCESS SILICATE WHICH DOES NOT READILY ADHERE TO THE SURFACES: SUBMERGING THE FILM-COATED CATHODES IN THE ELECTROLYTE; AND DEPOSITING THE METAL THEREON WITHOUT DESTROYING THE FILMS TO FACILITATE REMOVAL OF THE METAL AND ELIMINATE THE NECESSITY OF BUFFING AND POLISHING THE CATHODES WHEN THEY ARE USED AGAIN.
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) | 1953-01-23 | 1953-07-25 | 1954-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-23 | 1957-07-25 | 1958-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-23 | 1961-07-25 | 1962-01-24 | $7700.00 | Window Closed / Lapsed |