US3826733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bipolar electrode
Assignee: Hooker Chemical Corp
•
Filing: 1973-05-25
•
Granted: 1974-07-30
•
Expires: 1993-05-25
Abstract
Abstract AN IMPROVED DIMENSIONALLY-STALBE BIPOLAR ELECTRODE FOR USE IN ELECTROCHEMICAL APPLICATIONS COMPRISING A CENTRAL VALVE METAL LAYER, SUITABLE ANODIC MATERIAL ON THE ANODE SIDE OF THE VALVE METAL AND A BARRIER LAYER OF BORON ON THE CATHODIC SIDE OF THE VALVE METAL. SUCH ELECTRODES FUNCTION AT LOW HYDROGEN PERMEABILITY RATES DURING USE IN ELECTROLYTIC PROCESSES.
Inventors
- 👤 R Schultz
- 👤 E Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:19
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/091; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12611; Y10T428/12771; Y10T428/12806; Y10T428/12861; Y10T428/12875
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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |