Patent US3801490A successfully refreshed from Google Patents.
US3801490A
Expired / Lapsed
US
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Pyrochlore electrodes
Assignee: PPG Industries Inc
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Filing: 1972-07-18
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Granted: 1974-04-02
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Expires: 1992-07-18
Abstract
Abstract ELECTRODES USEFUL FOR ELECTROCHEMICAL REACTIONS ARE DISCLOSED. ALSO DISCLOSED ARE ELECTROLYTIC CELLS USING SUCH ELECTRODES AND THE USE OF SUCH ELECTRODES IN THE CONDUCT OF ELECTROCHEMICAL REACTIONS. THE ELECTRODES HAVE A PYROCHLORE-CONTAINING SURFACE ON A SUITABLE ELECTROCONDUCTIVE BASE.
Inventors
- 👤 C Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:36
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/091; C25B11/093; C25B11/075; C25B11/081
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |