Patent US4750977A successfully refreshed from Google Patents.
US4750977A
Expired / Lapsed
US
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Electrochemical plating of platinum black utilizing ultrasonic agitation
Assignee: Bacharach Inc
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Filing: 1986-12-17
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Granted: 1988-06-14
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Expires: 2006-12-17
Abstract
Abstract Platinum black is electrochemically plated onto a conductive substrate, such as a platinum electrode, by positioning a counter electrode and the conductive substrate in a platinum(IV) ion plating solution. An electric current is passed through the counter electrode, substrate and plating solution for a predetermined period of time. The plating solution and conductive substrate are subjected to ultrasonic agitation while the plating is carried out. The plating solution preferably includes chloroplatinic acid and lead ion.
Inventors
- 👤 Carl A. Marrese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:22
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/50; C25D5/00; C25D5/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
59 words
A method of electrochemically plating a layer of platinum black onto a conductive substrate comprising the steps of positioning a counter electrode and a conductive substrate in a platinum(IV) ion plating solution and passing an electric current through said counter electrode, conductive substrate and plating solution while simultaneously subjecting said plating solution and said conductive substrate to ultrasonic agitation.
Claim 2
Independent Claim
59 words
A method of electrochemically plating a layer of platinum black onto a conductive substrate comprising the steps of positioning a counter electrode and a conductive substrate in a platinum(IV) ion plating solution and passing an electric current through said counter electrode, conductive substrate and plating solution while simultaneously subjecting said plating solution and said conductive substrate to ultrasonic agitation.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein said plating solution includes an acid selected from the group consisting of chloroplatinic acid and bromoplatinic acid.
Claim 4
Dependent Claim
26 words
The method of claim 2 wherein said plating solution further includes an additive selected from the group consisting of lead ion, copper ion, and mercury ion.
Claim 5
Dependent Claim
12 words
The method of claim 1 wherein said plating solution includes chloroplatinic acid.
Claim 6
Dependent Claim
13 words
The method of claim 4 wherein said plating solution further includes lead ion.
Claim 7
Dependent Claim
13 words
The method of claim 1 wherein said conductive substrate is a platinum electrode.
Claim 8
Dependent Claim
14 words
The method of claim 1 wherein said conductive substrate is a platinum wire electrode.
Claim 9
Independent Claim
69 words
A method of plating platinum black onto the outer surface of a platinum substrate comprising the steps of positioning a counter electrode and said platinum substrate in a plating solution which includes chloroplatinic acid and lead ion, and passing a direct electric current through said counter electrode, platinum substrate and plating solution for a predetermined time period while simultaneously agitating said plating solution and platinum substrate with ultrasonic vibrations.
Claim 10
Independent Claim
69 words
A method of plating platinum black onto the outer surface of a platinum substrate comprising the steps of positioning a counter electrode and said platinum substrate in a plating solution which includes chloroplatinic acid and lead ion, and passing a direct electric current through said counter electrode, platinum substrate and plating solution for a predetermined time period while simultaneously agitating said plating solution and platinum substrate with ultrasonic vibrations.
Claim 11
Dependent Claim
14 words
The method of claim 8 wherein said platinum substrate is a platinum wire electrode.
References Cited (Backward Citations)
US4152233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-14 | 1991-12-14 | 1992-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-14 | 1995-12-14 | 1996-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-14 | 1999-12-14 | 2000-06-14 | $7700.00 | Window Closed / Lapsed |