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US4329219A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrode for electrochemical processes

Assignee: Individual
•
Filing: 1979-10-29
•
Granted: 1982-05-11
•
Expires: 1999-10-29
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Abstract

Abstract An electrode comprising a current-conducting base having deposited thereon an active mass of the following composition, in percent by mass: ______________________________________ silica 10-90 platinum group metal oxides 5-45 oxides of passivating metals 5-45. ______________________________________ The electrode of this invention is useful as anodes in the production of chlorine and caustic soda, as well as in electrolytic processes of producing chlorates and hyperchlorites.

Inventors

  • 👤 Ernest A. Druzhinin
  • 👤 Vladimir L. Kubasov
  • 👤 Vladimir B. Busse-Machukas
  • 👤 Florenty I. Lvovich
  • 👤 Evgeny L. Krongauz
  • 👤 Leonid I. Jurkov

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 00:37
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/46104; C02F1/46109; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/091; C25B11/093; C02F1/467; C02F1/4672; C02F1/4674; C02F2001/46133; C02F2001/46138; C02F2001/46142

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 69 words
An electrode for electrochemical processes, said electrode consisting essentially of a current-conducting base of a passivating metal having a layer of an active mass deposited thereon, said layer consisting of silica, oxides of passivating metals and oxides of metals of the platinum group, the components being present in the following proportions, in percent by mass: ______________________________________ silica 10-90 platinum group metal oxides 5-45 oxides of passivating metals 5-45. ______________________________________
Claim 2
Dependent Claim 69 words
An electrode for electrochemical processes, said electrode consisting essentially of a current-conducting base of a passivating metal having a layer of an active mass deposited thereon, said layer consisting of silica, oxides of passivating metals and oxides of metals of the platinum group, the components being present in the following proportions, in percent by mass: ______________________________________ silica 10-90 platinum group metal oxides 5-45 oxides of passivating metals 5-45. ______________________________________
Claim 3
Dependent Claim 32 words
An electrode according to claim 1, wherein the active mass has the following composition, in percent by mass: ______________________________________ silica 10-75 platinum group metal oxides 20-45 oxides of passivating metals 5-45. ______________________________________
Claim 4
Dependent Claim 32 words
An electrode according to claim 1, wherein the active mass has the following composition, in percent by mass: ______________________________________ silica 10-30 platinum group metal oxides 35-45 oxides of passivating metals 35-45. ______________________________________
Claim 5
Dependent Claim 25 words
Electrode according to claim 1, wherein said passivating metal is selected from the group consisting of titanium, tantalum, zirconium, niobium and alloys of these metals.
Claim 6
Dependent Claim 20 words
Electrode according to claim 4, wherein said platinum group metal is selected from the group consisting of ruthenium and iridium.

References Cited (Backward Citations)

US3632498A Cited
GB1168558A Cited
SU369923A1 Cited
US3677815A Cited
BE748142A Cited
FR2040116A5 Cited
US3672990A Cited
US3663414A Cited
GB1463553A Cited
DE2714488A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1985-05-10 1985-11-09 1986-05-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1989-05-10 1989-11-09 1990-05-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1993-05-10 1993-11-09 1994-05-11 $7700.00 Window Closed / Lapsed

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