Patent US3728233A successfully refreshed from Google Patents.
US3728233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous electrode having open feed cavity
Assignee: Phillips Petroleum Co
•
Filing: 1972-02-14
•
Granted: 1973-04-17
•
Expires: 1992-02-14
Abstract
Abstract IN AN ELECTROCHEMICAL PROCESS, THE REACTION TAKES PLACE WITHIN THE CONINES OF A POROUS ELECTRODE ELEMENT. THE BOTTOM OF THIS ELECTRODE ELEMENT HAS A CAVITY OPEN TO THE BULK OF THE ELECTROLYTE. THE GASEOUS OR VAPOROUS FEED MATERIALS ARE INTRODUCED INTO THIS CAVITY, AND ARE CONVERTED DURING THEIR UPWARD PASSAGE THROUGH THE ELECTRODE WITHOUT CONTACT WITH THE BULK OF THE ELECTROLYTE.
Inventors
- 👤 B Ashe
- 👤 H Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:31
CPC Classifications
C; C25; C25B; C25B3/00; C25B3/20; C25B3/27; C25B3/28; C25B11/00; C25B11/02; C25B11/03; C25B11/031; C25B3/01; C25B3/11
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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |