US3254015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating platinum-coated electrodes
Assignee: Bishop & Co Platinum Works J
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Filing: 1961-07-28
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Granted: 1966-05-31
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Expires: 1981-07-28
Abstract
No abstract record available.
Inventors
- 👤 Steele Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:52
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/075; C25B11/081
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
THE METHOD OF LOWERING THE OVERVOLTAGE OF A PLATINUM-COATED ANODE FOR A CHLORINE CELL COMPRISING FIRST CHARGING THE PLATINUM WITH HYDROGEN BY ELECTROLYZING IT CATHODICALLY IN A SOLUTION WHICH IS FREE OF PLATINUM UNTIL EVOLUTION OF HYDROGEN OCCURS ON ITS SURFACE, AND THEN HEATING THE ANODE TO A TEMPERATURE WITHIN THE RANGE OF FROM 700*F. TO 1000*F. FOR A TIME SUFFICIENT TO PRODUCE AT LEAST SOME RECRYSTALLIZATION OF THE PLATINUM.
Claim 2
Independent Claim
70 words
THE METHOD OF LOWERING THE OVERVOLTAGE OF A PLATINUM-COATED ANODE FOR A CHLORINE CELL COMPRISING FIRST CHARGING THE PLATINUM WITH HYDROGEN BY ELECTROLYZING IT CATHODICALLY IN A SOLUTION WHICH IS FREE OF PLATINUM UNTIL EVOLUTION OF HYDROGEN OCCURS ON ITS SURFACE, AND THEN HEATING THE ANODE TO A TEMPERATURE WITHIN THE RANGE OF FROM 700*F. TO 1000*F. FOR A TIME SUFFICIENT TO PRODUCE AT LEAST SOME RECRYSTALLIZATION OF THE PLATINUM.
References Cited (Backward Citations)
CA623718A
Cited
US2987453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |