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US4089771A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrode for electrolytic process involving hydrogen generation

Assignee: Gow Enterprises Ltd
•
Filing: 1977-06-14
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Granted: 1978-05-16
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Expires: 1997-06-14
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Abstract

Abstract A novel electrode is provided which comprises a porous titanium sheet having a cathode exposed surface which may be untreated titanium or hydrided titanium, and a core of a dense (e.g. expanded) titanium material (e.g. sheet) which is of less porosity or higher density than the surface, the core extending beyond the cathodic surface to provide an anodic member, or a means for connection for current transfer. The cathodic element may include a coating of silver thereon and therein within the pores, or the hydrided surface of the cathode, either as such or one provided with the silver coating may further include a coating of MoS 2 thereon and therein within the pores. The exposed cathodic surface of the electrode is of large pore size to enable low cathodic overvoltage. The extending anodic element is coated (e.g. with platinum) to provide the anodic function.

Inventors

  • 👤 H. Benny Westerlund

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 09:08
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/02; C25B11/04; C25B11/051; C25B11/073; C25B11/075; C25B11/042; C25B11/091

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 29 words
A titanium material bipolar electrode, the cathodic element of which has a core of dense titanium material, and a pores containing cathodic surface of powdered, pressed, and/or sintered titanium.
Claim 2
Dependent Claim 29 words
A titanium material bipolar electrode, the cathodic element of which has a core of dense titanium material, and a pores containing cathodic surface of powdered, pressed, and/or sintered titanium.
Claim 3
Dependent Claim 20 words
The electrode of claim 1 wherein said cathodic surface is formed of sintered, pressed, powdered titanium, which has been hydrided.
Claim 4
Dependent Claim 28 words
The electrode of claim 1 wherein said cathodic surface is formed of sintered, pressed, powdered titanium and a coating of MoS 2 thereon and therein within the pores.
Claim 5
Dependent Claim 20 words
The electrode of claim 2 wherein the hydrided surface includes a coating of silver thereon and therein within the pores.
Claim 6
Dependent Claim 21 words
The electrode of claim 2 wherein the hydrided surface includes a coating of MoS 2 thereon and therein within the pores.
Claim 7
Dependent Claim 21 words
The electrode of claim 5 wherein the hydrided surface includes a coating of MoS 2 thereon and therein within the pores.
Claim 8
Dependent Claim 17 words
The electrode of claim 1 wherein said core of dense material is a sheet of expanded titanium.
Claim 9
Dependent Claim 26 words
The electrode of claim 1 wherein said core of dense material is fine powdered titanium which has been pressed and sintered as a casting or sheet.
Claim 10
Dependent Claim 31 words
The electrode of claim 1 wherein said core of dense material extends beyond an end of said cathodic element, thereby to provide an anodic element, for providing an end-to-end bipolar electrode.
Claim 11
Dependent Claim 30 words
The electrode of claim 1 wherein said core of dense material extends beyond an end of said cathodic element, thereby to provide a member for electrical current transfer or connection.
Claim 12
Dependent Claim 21 words
The electrode of claim 9 wherein said anodic coating is of a noble metal or an oxide of a noble metal.
Claim 13
Dependent Claim 22 words
The electrode of claim 1 wherein the exposed edge face of the cathodic element is provided with an electrically non-conductive electrode spacer.
Claim 14
Dependent Claim 16 words
The electrode of claim 12 wherein said electrode spacer is formed of a synthetic plastics material.

References Cited (Backward Citations)

US3732157A Cited
US3873437A Cited
US3919059A Cited
US3994798A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-05-15 1981-11-14 1982-05-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-05-15 1985-11-14 1986-05-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-05-15 1989-11-14 1990-05-16 $7700.00 Window Closed / Lapsed

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