US3078326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic furnace with shielded feed
Assignee: Stauffer Chemical Co
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Filing: 1959-12-28
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Granted: 1963-02-19
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Expires: 1979-12-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Hugh R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:29
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/30; H01J37/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
AN ELECTRON-BOMBARDMENT MELTING AND CASTING FURNACE COMPRISING A CRUCIBLE HAVING AN OPEN TOP, A TUBULAR SHIELD HAVING AN OPEN LOWER END ADJACENT TO AND APPROXIMATELY CENTERED OVER SAID OPEN TOP, SAID LOWER END OVERLYING LESS THAN HALF THE AREA OF SAID OPEN TOP, LEAVING A SUBSTANTIAL ANNULAR CLEARANCE BETWEEN THE CRUCIBLE AND THE TUBULAR SHIELD, MEANS FOR SUPPLYING THE MATERIAL TO BE CAST DOWNWARD THROUGH THE SHIELD INTO SAID CRUCIBLE, AND AN ELECTRON GUN SET TO DIRECT A STREAM OF ELECTRONS
Claim 2
Dependent Claim
81 words
AN ELECTRON-BOMBARDMENT MELTING AND CASTING FURNACE COMPRISING A CRUCIBLE HAVING AN OPEN TOP, A TUBULAR SHIELD HAVING AN OPEN LOWER END ADJACENT TO AND APPROXIMATELY CENTERED OVER SAID OPEN TOP, SAID LOWER END OVERLYING LESS THAN HALF THE AREA OF SAID OPEN TOP, LEAVING A SUBSTANTIAL ANNULAR CLEARANCE BETWEEN THE CRUCIBLE AND THE TUBULAR SHIELD, MEANS FOR SUPPLYING THE MATERIAL TO BE CAST DOWNWARD THROUGH THE SHIELD INTO SAID CRUCIBLE, AND AN ELECTRON GUN SET TO DIRECT A STREAM OF ELECTRONS
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) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |