US3344840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and apparatus for producing metal ingots
Assignee: Crucible Materials Corp
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Filing: 1966-07-01
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Granted: 1967-10-03
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Expires: 1986-07-01
Abstract
No abstract record available.
Inventors
- 👤 Russell C Buehl
- 👤 Schempp Reinhold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:42
CPC Classifications
B; B22; B22D; B22D23/00; B22D23/06; B22D23/10; C; C22; C22B; C22B9/00; C22B9/16; C22B9/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN A VACUUM ARC MELTING PROCESS, A METHOD OF ENHANCING THE RATE OF MELTING OF A METALLIC CONSUMABLE ELECTRODE AND OF ENHANCING THE RATE OF SOLIDIFICATION AND THE HOMOGENEITY OF A METAL INGOT PRODUCED THEREBY, IN A MOLD HAVING FIXED SIDES AND BOTTOM, COMPRISING ARC MELTING THE ELECTRODE INTO A METAL MOLD, COOLING THE MOLD TO SOLIDIFY AN OUTER SKIN ABOUT THE MOLTEN METAL AND TO FORM A
Claim 2
Dependent Claim
68 words
IN A VACUUM ARC MELTING PROCESS, A METHOD OF ENHANCING THE RATE OF MELTING OF A METALLIC CONSUMABLE ELECTRODE AND OF ENHANCING THE RATE OF SOLIDIFICATION AND THE HOMOGENEITY OF A METAL INGOT PRODUCED THEREBY, IN A MOLD HAVING FIXED SIDES AND BOTTOM, COMPRISING ARC MELTING THE ELECTRODE INTO A METAL MOLD, COOLING THE MOLD TO SOLIDIFY AN OUTER SKIN ABOUT THE MOLTEN METAL AND TO FORM A
References Cited (Backward Citations)
GB371371A
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GB379120A
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US2561360A
Cited
US2747244A
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US2955333A
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Cited
US3099053A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |