Patent US3084037A successfully refreshed from Google Patents.
US3084037A
Expired / Lapsed
US
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Gaseous ion purification process
Assignee: Temescal Metallurgical Corp
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Filing: 1960-01-08
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Granted: 1963-04-02
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Expires: 1980-01-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Hugh R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:10
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/30; H01J37/305; H01J37/3053; C; C22; C22B; C22B9/00; C22B9/16; C22B9/22; C22B9/226
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A METHOD OF PURIFYING METAL OF OXIDES THEREOF WHICH A HIGH BOILING POINT, AND COMPRISING THE STEPS OF APPLYING HEAT TO THE METAL TO MELT SAME, STIRRING THE MOLTEN METAL TO CIRCULATE SAME ACROSS THE EXPOSED LIQUID SURFACE THEREOF, SUPPLYING IONIZED HALOGEN GAS TO THE SURFACE OF THE MOLTEN METAL WHEREBY SAME REACTS WITH THE METAL OXIDES TO SEVER THE BONDS THEREOF AND FREE THE METAL WHILE RELEASING THE OXYGEN IN VOLATILE FORM, AND MAINTAINING A VACUUM OF AT LEAST ONE MICRON OF MERCURY ABOUT THE MOLTEN METAL WHEREBY VOLATILIZED IMPURITIES ARE REMOVED FROM THE REGION OF THE METAL.
Claim 2
Independent Claim
99 words
A METHOD OF PURIFYING METAL OF OXIDES THEREOF WHICH A HIGH BOILING POINT, AND COMPRISING THE STEPS OF APPLYING HEAT TO THE METAL TO MELT SAME, STIRRING THE MOLTEN METAL TO CIRCULATE SAME ACROSS THE EXPOSED LIQUID SURFACE THEREOF, SUPPLYING IONIZED HALOGEN GAS TO THE SURFACE OF THE MOLTEN METAL WHEREBY SAME REACTS WITH THE METAL OXIDES TO SEVER THE BONDS THEREOF AND FREE THE METAL WHILE RELEASING THE OXYGEN IN VOLATILE FORM, AND MAINTAINING A VACUUM OF AT LEAST ONE MICRON OF MERCURY ABOUT THE MOLTEN METAL WHEREBY VOLATILIZED IMPURITIES ARE REMOVED FROM THE REGION OF THE METAL.
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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |