Patent US2662831A successfully refreshed from Google Patents.
US2662831A
Expired / Lapsed
US
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Method of bonding copper to aluminum or aluminum alloys
Assignee: Anderson Brass Works
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Filing: 1950-07-19
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Granted: 1953-12-15
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Expires: 1970-07-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Carl R Culverhouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:28
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/42; C25D5/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
THE METHOD OF FIRMLY BONDING A COTTAGE OF COPPER DIRECTLY TO ALUMINUM OR ALUMINUM ALLOYS COMPRISING DEGREASING AND CLEANING THE ALUMINUM TO BE COATED, IMMERSING THE ALUMNIUM THUS DEGREASED AND CLEANED IN AN AQUEOUS SOLUTION OF AN ALKALI ZINCATE, THEREBY DEPOSITING ZINC ON THE ALUMINUM, AND CHEMICALLY REPLACING THE ZINC WITH COPPER BY IMMERSING THE ZINC-COATED ALUMINUM IN AN AQUEOUS SAID SOLUTION OF COPPER FLUOBORATE.
Claim 2
Independent Claim
65 words
THE METHOD OF FIRMLY BONDING A COTTAGE OF COPPER DIRECTLY TO ALUMINUM OR ALUMINUM ALLOYS COMPRISING DEGREASING AND CLEANING THE ALUMINUM TO BE COATED, IMMERSING THE ALUMNIUM THUS DEGREASED AND CLEANED IN AN AQUEOUS SOLUTION OF AN ALKALI ZINCATE, THEREBY DEPOSITING ZINC ON THE ALUMINUM, AND CHEMICALLY REPLACING THE ZINC WITH COPPER BY IMMERSING THE ZINC-COATED ALUMINUM IN AN AQUEOUS SAID SOLUTION OF COPPER FLUOBORATE.
References Cited (Backward Citations)
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US1405534A
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US1457149A
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US1627900A
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US2398738A
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US2580773A
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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) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |