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US3833486A
Expired / Lapsed
US
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Cyanide-free electroplating
Assignee: Shipley Co Inc
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Filing: 1973-03-26
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Granted: 1974-09-03
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Expires: 1993-03-26
Abstract
Abstract Improved cyanide-free aqueous electroplating baths for plating metals, the baths containing water soluble phosphonate chelating agents combined with at least one chelatable metal ion and containing as an additive at least one strong oxidizing agent, and electroplating processes employing said baths. Additional materials may also be added for further improvements.
Inventors
- 👤 F Nobel
- 👤 L Yoen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:28
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
The process according to claim 1 in which the metal undergoing electrodeposition is selected from the group consisting of iron, cobalt, nickel, zinc, silver, copper, cadmium and tin.
Claim 2
Dependent Claim
13 words
The process of claim 2 in which the metal undergoing electrodeposition is copper.
References Cited (Backward Citations)
US3475293A
Cited
DE2023304A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |