US3788968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Layered electrode
Assignee: GEA Group AG
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Filing: 1971-12-29
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Granted: 1974-01-29
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Expires: 1991-12-29
Abstract
Abstract AN ELECTRODE, ESPECIALLY AS AN ANODE IN THE ELECTROLYSIS OF ALKALI METAL CHLORIDES, INCLUDES A GRAPHITE BODY, A FIRST SURFACE COVERING OF A HARD CERAMIC SUCH AS TITANIUM CARBIDE OR TITANIUM NITRIDE AND AT LEAST ONE METAL AND/OR COATING WHICH IS ELECTRICALLY POROUS AND SECOND OXIDE COATING WHICH IS ELECTRALLY POROUS AND RESISTANT TO THE ELECTROYLSIS CONDITIONS.
Inventors
- 👤 J Mueller
- 👤 K Lohrberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:01
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/055; C25B11/057; C25B11/065; C25B11/073; C25B11/091; C25B11/093
Claims Analysis
Total Claims: 0
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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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |