US3761312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stripping of coated titanium electrodes
Assignee: Imperial Chemical Industries Ltd
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Filing: 1971-05-27
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Granted: 1973-09-25
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Expires: 1991-05-27
Abstract
Abstract A METHOD OF STRIPPING THE COATING FROM AN ELECTRODE COMPRISING A TITANIUM SUPPORT AND A COATING COMPRISING A PLATINUM GROUP METAL OXIDE AND TITANIUM DIOXIDE THEREON, WHICH COMPRISES IMMERSING THE ELECTRODE IN AN ACID OR ALKALINE AQUEOUS SOLUTION CONTAINING 0.3%-3% BY WEIGHT OF HYDROGEN PEROXIDE AT A TEMPERATURE OF 60*C.,-80*C. FOR AT LEAST 1 1/2 HOURS AND THEN IMMERSING THE ELECTRODE IN HYDROCHLORIC ACID CONTAINING 20%-30% BY WEIGHT OF HYDROGEN CHLORIDE AT A TEMPERATURE OF 60-80*C. UNTIL THE COATING HAS BECOME DETACHED FROM THE TITANIUM SUPPORT.
Inventors
- 👤 J Entwisle
- 👤 K Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:37
CPC Classifications
C; C23; C23G; C23G1/00; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |