Patent US3219561A successfully refreshed from Google Patents.
US3219561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual cell refining of silicon and germanium
Assignee: General Trustee Co Inc
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Filing: 1962-03-14
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Granted: 1965-11-23
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Expires: 1982-03-14
Abstract
No abstract record available.
Inventors
- 👤 Monnier Robert
- 👤 Barakat Dlawar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:07
CPC Classifications
C; C22; C22B; C22B41/00; C01; C01B; C01B33/00; C01B33/02; C01B33/037; C25; C25B; C25B1/00; C25B1/01; C25B1/33; C25C; C25C3/00; C25C3/34; C25C7/00; C25C7/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD OF LPRODUCING REFINED SILICON AND GERMANIUM COMPRISING PASSING A DIRECT CURRENT BETWEEN AN ANODE IN CONTACT WITH A MOLTEN SALT BATH CONTAINING A FLUORIDE AND AN OXIDE OF A METAL OF THE CLASS CONSISTING OF GERMANIUM AND SILICON AND A CATHODE IN CONTACT WITH ANOTHER MOLTEN SALT BATH CONTAINING A FLUORIDE, SAID BATHS BEING SEPARATED BY A MOLTEN ALLOY OF THE METAL CORRESPONDING TO SAID OXIDE AND A NOBLER METAL TO REDUCE SAID OXIDE TO METAL AND DEPOSIT IT ON SAID CATHODE.
Claim 2
Independent Claim
84 words
A METHOD OF LPRODUCING REFINED SILICON AND GERMANIUM COMPRISING PASSING A DIRECT CURRENT BETWEEN AN ANODE IN CONTACT WITH A MOLTEN SALT BATH CONTAINING A FLUORIDE AND AN OXIDE OF A METAL OF THE CLASS CONSISTING OF GERMANIUM AND SILICON AND A CATHODE IN CONTACT WITH ANOTHER MOLTEN SALT BATH CONTAINING A FLUORIDE, SAID BATHS BEING SEPARATED BY A MOLTEN ALLOY OF THE METAL CORRESPONDING TO SAID OXIDE AND A NOBLER METAL TO REDUCE SAID OXIDE TO METAL AND DEPOSIT IT ON SAID CATHODE.
References Cited (Backward Citations)
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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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |