Patent US2677654A successfully refreshed from Google Patents.
US2677654A
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US
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Copper electroplating and compositions therefor
Assignee: Poor and Co
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Filing: 1951-05-10
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Granted: 1954-05-04
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Expires: 1971-05-10
Abstract
No abstract record available.
Inventors
- 👤 Allan E Chester
- 👤 Joseph T Irwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:49
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38; C25D3/40; C25D5/00; C25D5/10; C25D5/12; C25D5/34; C25D5/36; C25D5/627
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
AN ALKALINE COPPER CYANIDE PLATING BATH COMPRISING COPPER IN A SOLUBLE FORM DISSOLVED IN AN ALKALINE CYANIDE AQUEOUS LIQUID CONTAINING DITHIOBIURET DISSOLVED IN SAID BATH, THE QUANTITY OF DITHIOBIURET BEING SUFFICIENT TO PRODUCE A BRIGHT PLATE WHEN COPPER IS ELECTRODEPOSITED FROM SAID BATH.
Claim 2
Dependent Claim
43 words
AN ALKALINE COPPER CYANIDE PLATING BATH COMPRISING COPPER IN A SOLUBLE FORM DISSOLVED IN AN ALKALINE CYANIDE AQUEOUS LIQUID CONTAINING DITHIOBIURET DISSOLVED IN SAID BATH, THE QUANTITY OF DITHIOBIURET BEING SUFFICIENT TO PRODUCE A BRIGHT PLATE WHEN COPPER IS ELECTRODEPOSITED FROM SAID BATH.
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) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |