US2610144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electropolishing
Assignee: Oneida LLC
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Filing: 1947-02-08
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Granted: 1952-09-09
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Expires: 1967-02-08
Abstract
No abstract record available.
Inventors
- 👤 Samuel E Eaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:55
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/16; C25F3/22; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
METHOD FOR THE ANODIC POLISHING OF SILVER, COPPER, CADMIUM, ALLOYS CONSISTING THE THESE METALS, BRASS, ZINC AND NICKEL SILVER IN AN ELECTROLYTIC CELL CONTAINING A CYANIDE BATH IN WHICH THE RATE OF AGITATION OF THE ANODE WITH RESPECT TO THE ELECTROLYTE AFFECTS THE POTENTIAL DIFFERENCE-CURRENT DENSITY CURVE AND THE LOCATION OF THE EQUILIBRIUM ETCHING, POLISHING AND PERMANENT COLORATION REGIONS WITH RESPECT TO SAID CURVE, SAID METHOD COMPRISING THE STEPS OF SETTING UP AN INITIAL AGITATION OF SUCH METAL WITH RESPECT TO THE ELECTROLYTE, APPLYING A POTENTIAL DIFFERENCE BETWEEN THE ANODE AND THE CATHODE, SAID POTENTIAL DIFFERENCE BEING IN THE EQUILIBRIUM POLISHING REGION, CYCLICALLY CHANGING SAID RATE OF AGITATION TO SHIFT THE RESULTING POTENTIAL DIFFERENCE-CURRENT DENSITY VALUES TO A POINT OUTSIDE SAID POLISHING REGION FOR A PERIOD OF TIME SHORT ENOUGH TO AVOID THE FORMATION OF A PERMANENT ETCH OR A PERMANENT COLORATION, AND REPEATING SAID CYCLE UNTIL AT LEAST A PORTION OF THE ANODE ACQUIRES A POLISH.
Claim 2
Dependent Claim
157 words
METHOD FOR THE ANODIC POLISHING OF SILVER, COPPER, CADMIUM, ALLOYS CONSISTING THE THESE METALS, BRASS, ZINC AND NICKEL SILVER IN AN ELECTROLYTIC CELL CONTAINING A CYANIDE BATH IN WHICH THE RATE OF AGITATION OF THE ANODE WITH RESPECT TO THE ELECTROLYTE AFFECTS THE POTENTIAL DIFFERENCE-CURRENT DENSITY CURVE AND THE LOCATION OF THE EQUILIBRIUM ETCHING, POLISHING AND PERMANENT COLORATION REGIONS WITH RESPECT TO SAID CURVE, SAID METHOD COMPRISING THE STEPS OF SETTING UP AN INITIAL AGITATION OF SUCH METAL WITH RESPECT TO THE ELECTROLYTE, APPLYING A POTENTIAL DIFFERENCE BETWEEN THE ANODE AND THE CATHODE, SAID POTENTIAL DIFFERENCE BEING IN THE EQUILIBRIUM POLISHING REGION, CYCLICALLY CHANGING SAID RATE OF AGITATION TO SHIFT THE RESULTING POTENTIAL DIFFERENCE-CURRENT DENSITY VALUES TO A POINT OUTSIDE SAID POLISHING REGION FOR A PERIOD OF TIME SHORT ENOUGH TO AVOID THE FORMATION OF A PERMANENT ETCH OR A PERMANENT COLORATION, AND REPEATING SAID CYCLE UNTIL AT LEAST A PORTION OF THE ANODE ACQUIRES A POLISH.
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) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |