US3088906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode bar for aluminum reduction cell
Assignee: Saint Gobain Abrasives Inc
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Filing: 1959-12-07
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Granted: 1963-05-07
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Expires: 1979-12-07
Abstract
No abstract record available.
Inventors
- 👤 Elmer G Hurd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:16
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/16; F27D1/1636; F27D1/1642; F27D1/1647; F27D1/1652; C; C23; C23C; C23C24/00; C23C4/00; C23C4/04; C23C4/10; C23C4/11; C25; C25C; C25C3/00; C25C3/06; C25C3/16; F27D1/0003; F27D1/0006; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A CATHODE BAR FOR INSERTION THROUGH THE WALL OF AN ALUMINUM REDUCTION CELL MADE OF BORIDE SELECTED FROM THE GROUP CONSISTING OF TITANIUM BORIDE AND ZIRCONIUM BORIDE AND MIXTURES THEREOF, SAID BAR HAVING A LAMINATE ADHERENT COATING OF MAGNESIA OVER AN AREA INTERMEDIATE THE ENDS OF THE BAR AND BEING AT LEAST ONE MIL THICK, SAID MAGNESIA HAVING FROM 1% TO 10% SILICIA, NOT MORE THAN 5% OF OTHER MATERIAL SELECTED FROM THE GROUP CONSISTING OF METAL OXIDE AND METAL AND MIXTURES THEREOF AND NOT MORE THAN .5% OF OTHER MATTER, ALL BY WEIGHT.
Claim 2
Dependent Claim
94 words
A CATHODE BAR FOR INSERTION THROUGH THE WALL OF AN ALUMINUM REDUCTION CELL MADE OF BORIDE SELECTED FROM THE GROUP CONSISTING OF TITANIUM BORIDE AND ZIRCONIUM BORIDE AND MIXTURES THEREOF, SAID BAR HAVING A LAMINATE ADHERENT COATING OF MAGNESIA OVER AN AREA INTERMEDIATE THE ENDS OF THE BAR AND BEING AT LEAST ONE MIL THICK, SAID MAGNESIA HAVING FROM 1% TO 10% SILICIA, NOT MORE THAN 5% OF OTHER MATERIAL SELECTED FROM THE GROUP CONSISTING OF METAL OXIDE AND METAL AND MIXTURES THEREOF AND NOT MORE THAN .5% OF OTHER MATTER, ALL BY WEIGHT.
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) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |