US3954571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire and strip line electroplating
Assignee: M&T HARSHAW
•
Filing: 1972-02-17
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Granted: 1976-05-04
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Expires: 1992-02-17
Abstract
Abstract Methods and apparatus are provided for high speed wire and/or strip line electroplating of metals such as tin and zinc on a metal substrate by utilizing in the anode assembly therefor a combination of the plating metal as the anode and an anode support comprised essentially of a member selected from the group consisting of tantalum, niobium, and mixtures thereof.
Inventors
- 👤 Frederick Walter Eppensteiner
- 👤 R. E. Woehrle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:19
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/22; C25D17/00; C25D17/10; C25D3/30; C25D7/00; C25D7/06; C25D7/0614; C25D7/0642
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
102 words
In a method for the high speed wire and strip line zinc and/or tin electroplating of a metallic substrate, the steps which comprise continuously passing elongated portion of said substrate through an electroplating bath, disposing an anode-anode support structure in said bath and spaced apart from said substrate, the anode portion of said structure being the metal to be electroplated and the support portion comprised essentially of at least one member selected from the group consisting of tantalum, niobium and mixtures thereof, and passing a plating current through said anode-anode support structure and said bath to said substrate for the electroplating thereof.
Claim 2
Dependent Claim
102 words
In a method for the high speed wire and strip line zinc and/or tin electroplating of a metallic substrate, the steps which comprise continuously passing elongated portion of said substrate through an electroplating bath, disposing an anode-anode support structure in said bath and spaced apart from said substrate, the anode portion of said structure being the metal to be electroplated and the support portion comprised essentially of at least one member selected from the group consisting of tantalum, niobium and mixtures thereof, and passing a plating current through said anode-anode support structure and said bath to said substrate for the electroplating thereof.
Claim 3
Dependent Claim
16 words
A method as described in claim 1 in which said metal to be electroplated is zinc.
Claim 4
Dependent Claim
17 words
A method as described in claim 1 in which said bath is a chloride zinc electroplating bath.
Claim 5
Dependent Claim
24 words
A method as described in claim 1 in which said metal to be plated is tin, and the said support structure is essentially tantalum.
Claim 6
Dependent Claim
13 words
A method as described in claim 4 in which said bath contains halides.
Claim 7
Dependent Claim
27 words
A method as described in claim 4 in which said bath includes sodium ferrocyanide, sodium acid fluoride, sodium fluoride, stannous chloride, sodium chloride, and an addition agent.
References Cited (Backward Citations)
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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) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |