Patent US2689216A successfully refreshed from Google Patents.
US2689216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of copper
Assignee: American Brass Co
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Filing: 1952-03-04
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Granted: 1954-09-14
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Expires: 1972-03-04
Abstract
No abstract record available.
Inventors
- 👤 Ralph P Nevers
- 👤 Earl W Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:30
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS FOR THE ELECTRODEPOSITION OF SUBSTANTIALLY PURE PHOSPHORUS-FREE COPPER IN WHICH AN ELECTRIC CURRENT IS PASSED FROM A SOLUBLE COPPER ANODE THROUGH AN AQUEOUS ELECTROLYTE TO A CATHODE, CHARACTERIZED IN THAT THE ANODE IS COMPOSED ESSENTIALLY OF A PHOSPHORUS-BEARING COPPER CONTAINING 0.01% TO 0.1% PHOSPHORUS, IMPURITIES NORMALLY PRESENT IN COMMERICAL REFINED COPPER, AND THE BALANCE COPPER, WHEREBY AN ADHERENT FILM FORMS UPON THE SURFACE OF THE ANODE AND THE SURFACE OF THE CORRODING ANODE REMAINS SMOOTH THROUGHOUT ITS USEFUL LIFE.
Claim 2
Dependent Claim
81 words
A PROCESS FOR THE ELECTRODEPOSITION OF SUBSTANTIALLY PURE PHOSPHORUS-FREE COPPER IN WHICH AN ELECTRIC CURRENT IS PASSED FROM A SOLUBLE COPPER ANODE THROUGH AN AQUEOUS ELECTROLYTE TO A CATHODE, CHARACTERIZED IN THAT THE ANODE IS COMPOSED ESSENTIALLY OF A PHOSPHORUS-BEARING COPPER CONTAINING 0.01% TO 0.1% PHOSPHORUS, IMPURITIES NORMALLY PRESENT IN COMMERICAL REFINED COPPER, AND THE BALANCE COPPER, WHEREBY AN ADHERENT FILM FORMS UPON THE SURFACE OF THE ANODE AND THE SURFACE OF THE CORRODING ANODE REMAINS SMOOTH THROUGHOUT ITS USEFUL LIFE.
References Cited (Backward Citations)
GB189701657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |