US3702369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon carbide furnace
Assignee: Saint Gobain Abrasives Inc
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Filing: 1971-01-07
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Granted: 1972-11-07
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Expires: 1991-01-07
Abstract
Abstract This invention relates generally to furnaces which are useful in the production of silicon carbide, and particularly to an improved manner of supporting and locating the electrodes utilized in such furnaces.
Inventors
- 👤 John Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:33
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/0004; H05B3/0009; H05B3/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
An electric furnace as defined in claim 1 wherein said electrode support is mounted on one of said walls and includes a generally lateral portion Which extends over the furnace chamber and grips the electrode such that the electrode extends into the materials to be reacted from above.
Claim 2
Dependent Claim
58 words
An electric furnace as defined in claim 2 wherein a second furnace is positioned adjacent said furnace and said electrode support includes a second lateral portion which extends in a direction generally opposite to said first named lateral portion, and which can support a second electrode such that it extends into the reaction chamber of said second furnace.
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) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |