US3761313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stripping of coated titanium electrodes
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1971-05-27
•
Granted: 1973-09-25
•
Expires: 1991-05-27
Abstract
Abstract A METHOD FOR STRIPPING THE COATING FROM AN ELECTRODE COMPRISING A TITANIUM SUPPORT AND A COATING COMPRISING A PLATINUM METAL OXIDE THEREON WHICH COMPRISES IMMERSING THE ELECTRODE IN AN AQUEOUS MIXTURE COMRPISING AT LEAST ONE STRONG MINERAL ACID, OTHER THAN NITRIC ACID, WITH HYDROFLUORIC ACID AND/OR A PRECURSOR COMPOUND THAT WILL REACT WITH THE MINERAL ACID TO GIVE HYDROFLUORIC ACID, AT A TEMPERATURE AND FOR A TIME SUFFICIENT FOR THE COATING TO BECOME DETACHED FROM THE TITANIUM SUPPORT.
Inventors
- 👤 J Entwisle
- 👤 K Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:44
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/10; C23G1/106
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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 |