Patent US3458423A successfully refreshed from Google Patents.
US3458423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mercury cathode alkali-chlorine cell containing a porous titanium or tantalum layered anode
Assignee: BASF SE
•
Filing: 1966-11-21
•
Granted: 1969-07-29
•
Expires: 1986-11-21
Abstract
No abstract record available.
Inventors
- 👤 Gotthard Csizi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:13
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
65 words
A HORIZONTAL ALKALI-CHLORINE CELL ADAPTED TO CONTAIN A FLOWING MERCURY CATHODE COMPRISING AN ANODE HAVING AT LEAST TWO POROUS LAYERS OF TITANIUM, TANTALUM OR BASE ALLOYS OF THESE METALS SAID LAYERS BEING ARRANGED ONE ABOVE THE OTHER IN THE DIRECTION OF THE CATHODE AND THE LAYER BEHIND THE LAYER FACING THE CATHODE BEING ON ITS LOWER SURFACE ACTIVATED WITH A METAL OF THE PLATINUM GROUP.
Claim 2
Dependent Claim
65 words
A HORIZONTAL ALKALI-CHLORINE CELL ADAPTED TO CONTAIN A FLOWING MERCURY CATHODE COMPRISING AN ANODE HAVING AT LEAST TWO POROUS LAYERS OF TITANIUM, TANTALUM OR BASE ALLOYS OF THESE METALS SAID LAYERS BEING ARRANGED ONE ABOVE THE OTHER IN THE DIRECTION OF THE CATHODE AND THE LAYER BEHIND THE LAYER FACING THE CATHODE BEING ON ITS LOWER SURFACE ACTIVATED WITH A METAL OF THE PLATINUM GROUP.
References Cited (Backward Citations)
US2788460A
Cited
US3236756A
Cited
US3118828A
Cited
US2955999A
Cited
US3222265A
Cited
US3385780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |