US3257293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for controlling a counter-current electromigration installation
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1962-04-10
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Granted: 1966-06-21
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Expires: 1982-04-10
Abstract
No abstract record available.
Inventors
- 👤 Chemla Marius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:45
CPC Classifications
B; B01; B01D; B01D59/00; B01D59/38; B01D59/42; C; C25; C25C; C25C3/00; C25C3/06; C25C3/20; C25C7/00; C25C7/005; C25C7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A PROCESS FOR CONTROLLING COUNTER-CURRENT ELECTROMIGRATION BETWEEN AN ANODE AND A CATHODE IN A BATH OF FUSED SALT, COMPRISING CONTINUOUSLY ADDING A SUBSTANCE AT THE CATHODE TO REDISSOLVE THE METAL DEPOSITED AT THE CATHODE, TEMPORARILY INTERRUPTING, AFTER A PREDETERMINED PERIOD OF TIME, THE ELECTROLYSIS CURRENT BETWEEN THE ANODE AND THE CATHODE, MEASURING THE POTENTIAL DEVIATION OF THE CATHODE CAUSED BY THE DEPOSITED METAL, REINSTATING THE ELECTROLYSIS CURRENT WHEN SAID MEASURED POTENTIAL DIFFERENCE DECLINES WITH THE CONTINUED ADDITION OF THE SAID SUBSTANCE TO A PREDETERMINED LEVEL CORRESPONDING TO THE ABSENCE OF DEPOSITED METAL AT THE CATHODE AND CYCLICLY CARRYING OUT THE STEPS OF INTERRUPTING THE ELECTROLYSIS CURRENT, MEASURING THE POTENTIAL DIFFERENCE AND REINSTATING THE ELECTROLYSIS CURRENT.
Claim 2
Dependent Claim
115 words
A PROCESS FOR CONTROLLING COUNTER-CURRENT ELECTROMIGRATION BETWEEN AN ANODE AND A CATHODE IN A BATH OF FUSED SALT, COMPRISING CONTINUOUSLY ADDING A SUBSTANCE AT THE CATHODE TO REDISSOLVE THE METAL DEPOSITED AT THE CATHODE, TEMPORARILY INTERRUPTING, AFTER A PREDETERMINED PERIOD OF TIME, THE ELECTROLYSIS CURRENT BETWEEN THE ANODE AND THE CATHODE, MEASURING THE POTENTIAL DEVIATION OF THE CATHODE CAUSED BY THE DEPOSITED METAL, REINSTATING THE ELECTROLYSIS CURRENT WHEN SAID MEASURED POTENTIAL DIFFERENCE DECLINES WITH THE CONTINUED ADDITION OF THE SAID SUBSTANCE TO A PREDETERMINED LEVEL CORRESPONDING TO THE ABSENCE OF DEPOSITED METAL AT THE CATHODE AND CYCLICLY CARRYING OUT THE STEPS OF INTERRUPTING THE ELECTROLYSIS CURRENT, MEASURING THE POTENTIAL DIFFERENCE AND REINSTATING THE ELECTROLYSIS CURRENT.
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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |