US3637468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodes for electrolytic processes
Assignee: DALIC SA
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Filing: 1969-04-25
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Granted: 1972-01-25
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Expires: 1989-04-25
Abstract
Abstract This invention relates to electrolytic electroplating processes and devices. In accordance with the invention, the absorbent material that is conventionally used, for example, in the brush or tampon process, consists of an absorbent porous carbon material. A device for use in this context can comprise an electrode in contact with at least one carbon material member.
Inventors
- 👤 Jean J G Icxi
- 👤 Philippe J Tilche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:56
CPC Classifications
C; C25; C25D; C25D17/00; C25D17/10; C25D17/14; C25D5/00; C25D5/04; C25D5/06; Y; Y10; Y10S; Y10S204/00; Y10S204/07
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
95 words
An electrode assembly for the electrolytic treatment of a conductive workpiece comprising an electrode layer element connectable to one terminal of an electrical power source, an electrically conductive layer of a highly absorbent flexible fibrous carbon in contact with said electrode layer, and a layer of porous nonconductive material in contact over one face thereof with said carbon layer and adapted, while remaining of constant thickness, to be held with its opposite face in contact with the workpiece which is to be treated and which is connectable to the other terminal of said power source.
Claim 2
Dependent Claim
22 words
An electrode assembly according to claim 2, wherein the electrode is provided with perforated tubes of insulating material for transporting the electrolyte.
Claim 3
Dependent Claim
29 words
An electrode assembly according to claim 2, wherein the absorbent carbon layer is provided with tubes for the circulation of heat exchange fluid and for the distribution of electrolyte.
Claim 4
Dependent Claim
15 words
An electrode assembly according to claim 2, wherein the carbon layer is mainly graphitized carbon.
Claim 5
Dependent Claim
17 words
An electrode assembly as claimed in claim 2, wherein the assembly is cemented together with organic cements.
Claim 6
Dependent Claim
17 words
An electrode assembly as claimed in claim 6, wherein the cemented assembly is pyrolyzed with carbonaceous electrodes.
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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |