Patent US2495941A successfully refreshed from Google Patents.
US2495941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroplating copper on aluminum
Assignee: Reynolds Metals Co
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Filing: 1946-12-18
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Granted: 1950-01-31
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Expires: 1966-12-18
Abstract
No abstract record available.
Inventors
- 👤 Lucio F Mondolfo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:08
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/42; C25D5/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A METHOD OF ELECTROPLIATING COPPER ON ALUMINUM WHICH COMPRISES IMMERSING AT LEAST TWOALUMINUM ARTICLES IN A WATER SOLUTION OF SULFURIC ACID AND COPPER SULFATE, APPLYING AN ALTERNATING CURRENT TO THE TWO ARTICLES AS ELECTRODES AND FORMING AN ANODIC COATING THEREON, DISCONTINUING THE USE OF ALTERNATING CURRENT, CONNECTING THE ARTICLES IN PARALLEL AS CATHODES AND A BODY OF COPPER AS ANODE TO A SOURCE OF DIRECT CURRENT AND DEPOSITING COPPER ON THE ARTICLES.
Claim 2
Independent Claim
72 words
A METHOD OF ELECTROPLIATING COPPER ON ALUMINUM WHICH COMPRISES IMMERSING AT LEAST TWOALUMINUM ARTICLES IN A WATER SOLUTION OF SULFURIC ACID AND COPPER SULFATE, APPLYING AN ALTERNATING CURRENT TO THE TWO ARTICLES AS ELECTRODES AND FORMING AN ANODIC COATING THEREON, DISCONTINUING THE USE OF ALTERNATING CURRENT, CONNECTING THE ARTICLES IN PARALLEL AS CATHODES AND A BODY OF COPPER AS ANODE TO A SOURCE OF DIRECT CURRENT AND DEPOSITING COPPER ON THE ARTICLES.
References Cited (Backward Citations)
US1457149A
Cited
US1534709A
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US1735509A
Cited
GB290903A
Cited
US1947981A
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US1933301A
Cited
US2196018A
Cited
GB484492A
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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) | 1953-01-30 | 1953-08-01 | 1954-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-30 | 1957-08-01 | 1958-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-30 | 1961-08-01 | 1962-01-31 | $7700.00 | Window Closed / Lapsed |