US2793990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of alloys containing copper and tin
Assignee: Silvercrown Ltd
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Filing: 1954-05-17
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Granted: 1957-05-28
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Expires: 1974-05-17
Abstract
No abstract record available.
Inventors
- 👤 Heymann Erich
- 👤 Schmerling Grigory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:54
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C25D3/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PROCESS FOR THE ELETRODEPOSITION IN BRAIGHT FORM OF ALLOYS CONSISTING MAINLY OF COPPER AND TIN ON A CATHODE COMPRISING PASSING AN ELECTRIC CURRENT THROUGH AN ELECTROLYATE CONTAINING MAJOR PORTIONS OF COPPER AND TIN, A PRIMARY BRIGHTENER COMPRISING ABOUT .003 TO .3% OF SOLUBLE COMPOUNDS OF LEAD SELECTED FROM THE GROUP CONSISTING OF OXIDES AND SALTS, AND IN WHICH THE CATHODE AND AN ANODE OF THE ALLOY TO BE DEPOSITED ARE IMMERSED.
Claim 2
Dependent Claim
72 words
A PROCESS FOR THE ELETRODEPOSITION IN BRAIGHT FORM OF ALLOYS CONSISTING MAINLY OF COPPER AND TIN ON A CATHODE COMPRISING PASSING AN ELECTRIC CURRENT THROUGH AN ELECTROLYATE CONTAINING MAJOR PORTIONS OF COPPER AND TIN, A PRIMARY BRIGHTENER COMPRISING ABOUT .003 TO .3% OF SOLUBLE COMPOUNDS OF LEAD SELECTED FROM THE GROUP CONSISTING OF OXIDES AND SALTS, AND IN WHICH THE CATHODE AND AN ANODE OF THE ALLOY TO BE DEPOSITED ARE IMMERSED.
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) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |