US6090260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroplating method
Assignee: TDK Corp
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Filing: 1998-03-26
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Granted: 2000-07-18
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Expires: 2018-03-26
Abstract
Abstract A method of electroplating an object to be plated attached to a lower portion of a plating bath constituted by draining used plating solution and supplying new plating solution at every plating procedure. The method has a step of supplying additional current so that the object to be plated always has cathode potential, while the object to be plated is being dipped in the plating bath and electroplating is not carried out.
Inventors
- 👤 Satoshi Inoue
- 👤 Toyoaki Tanaka
- 👤 Yoshiro Nakagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:51
CPC Classifications
C; C25; C25D; C25D21/00; C25D21/12; C25D17/00; C25D17/10; Y; Y10; Y10S; Y10S204/00; Y10S204/07; Y10S205/00; Y10S205/917; Y10S205/918
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
118 words
A method of electroplating an object comprising the steps of: providing said object to be plated in a lower portion of a plating tank having a cathode in contact with the object and first and second anodes within the tank and spaced from the object; supplying a plating solution to said plating tank to immerse said object and said first and second anodes; supplying current from said first anode so that said object has cathodic potential; electroplating said object by supplying current from said second anode; and draining used plating solution from the plating tank, the current from said first anode being supplied when said object is immersed in the plating solution at least until the electroplating step.
Claim 2
Independent Claim
118 words
A method of electroplating an object comprising the steps of: providing said object to be plated in a lower portion of a plating tank having a cathode in contact with the object and first and second anodes within the tank and spaced from the object; supplying a plating solution to said plating tank to immerse said object and said first and second anodes; supplying current from said first anode so that said object has cathodic potential; electroplating said object by supplying current from said second anode; and draining used plating solution from the plating tank, the current from said first anode being supplied when said object is immersed in the plating solution at least until the electroplating step.
Claim 3
Dependent Claim
23 words
The method as claimed in claim 1, wherein when said electroplating is being carried out, said current from said first anode is supplied.
Claim 4
Dependent Claim
24 words
The method as claimed in claim 1, wherein when said electroplating is being carried out, said current from said first anode is not supplied.
Claim 5
Dependent Claim
38 words
The method as claimed in claim 1, wherein said current supplied from said first anode is direct current and said first anode is provided nearer said object to be plated in said plating tank than said second anode.
Claim 6
Dependent Claim
29 words
The method as claimed in claim 1, wherein said current supplied from said first anode is direct current with a current density of 0.01 to 0.1 A/dm 2 .
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) | 2003-07-18 | 2004-01-17 | 2004-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-07-18 | 2008-01-17 | 2008-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-07-18 | 2012-01-17 | 2012-07-18 | $7700.00 | Window Closed / Lapsed |