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Patent US3429692A successfully refreshed from Google Patents.
US3429692A
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US
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Process for removing mercury from metallic sodium containing the same
Assignee: Tekkosha Co Ltd
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Filing: 1966-11-14
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Granted: 1969-02-25
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Expires: 1986-11-14
Abstract
No abstract record available.
Inventors
- 👤 Mineo Doi
- 👤 Masamichi Miura
- 👤 Ryozo Sakuraba
- 👤 Takeo Ando
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:17
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS FOR REMOVING MERCURY FROM METALLIC SODIUM CONTAINING THE SAME WHICH COMPRISES CONTACTING SAID SODIUM IN ITS MOLTEN STATE WITH AT LEAST ONE CHLORIDE SALT SELECTED FROM THE GROUP CONSISTING OF CALCIUM AND MAGNESIUM CHLORIDES TO FORM AN AMALGAM WHICH IS SUBSTANTIALLY IMMISCIBLE WITH SAID SODIUM METAL AND SEPARATING SAID AMALGAM FROM SAID SODIUM METAL.
Claim 2
Dependent Claim
56 words
A PROCESS FOR REMOVING MERCURY FROM METALLIC SODIUM CONTAINING THE SAME WHICH COMPRISES CONTACTING SAID SODIUM IN ITS MOLTEN STATE WITH AT LEAST ONE CHLORIDE SALT SELECTED FROM THE GROUP CONSISTING OF CALCIUM AND MAGNESIUM CHLORIDES TO FORM AN AMALGAM WHICH IS SUBSTANTIALLY IMMISCIBLE WITH SAID SODIUM METAL AND SEPARATING SAID AMALGAM FROM SAID SODIUM METAL.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
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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) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |