US3972732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical cell
Assignee: Honeywell UOP LLC
•
Filing: 1975-02-10
•
Granted: 1976-08-03
•
Expires: 1995-02-10
Abstract
Abstract An electrochemical cell having a catalytic electrode which comprises a refractory oxide having a surface area of from 1 to 500 square meters per gram and a carbonaceous pyropolymer consisting of carbon and hydrogen forming at least a monolayer on said refractory oxide, said electrode having a conductivity at room temperature of from 10 0 to 10 2 inverse ohm-centimeters.
Inventors
- 👤 Rudolf H. Hausler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:59
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; H; H01; H01M; H01M4/00; H01M4/86; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
53 words
In an electrochemical cell, an electrode therefor comprising a refractory oxide having a surface area from 1 to 500 square meters per gram, and a carbonaceous pyropolymer forming at least a monolayer on said refractory oxide, said electrode having a conductivity at room temperature of from 10 0 to 10 2 inverse ohm-centimeters.
Claim 2
Dependent Claim
53 words
In an electrochemical cell, an electrode therefor comprising a refractory oxide having a surface area from 1 to 500 square meters per gram, and a carbonaceous pyropolymer forming at least a monolayer on said refractory oxide, said electrode having a conductivity at room temperature of from 10 0 to 10 2 inverse ohm-centimeters.
Claim 3
Dependent Claim
12 words
The electrochemical cell of claim 1 wherein said refractory oxide is alumina.
Claim 4
Dependent Claim
12 words
The electrochemical cell of claim 2 wherein said refractory oxide is gamma-alumina.
Claim 5
Dependent Claim
12 words
The electrochemical cell of claim 1 wherein said refractory oxide is silica-alumina.
Claim 6
Dependent Claim
15 words
The electrochemical cell of claim 1 wherein said refractory oxide is preimpregnated with a metal.
Claim 7
Dependent Claim
11 words
The electrochemical cell of claim 5 wherein said metal is platinum.
Claim 8
Dependent Claim
17 words
The electrochemical cell of claim 5 wherein said refractory oxide is preimpregnated with a plurality of metals.
Claim 9
Dependent Claim
13 words
The electrochemical cell of claim 7 wherein said metals are platinum and rhenium.
Claim 10
Dependent Claim
13 words
The electrochemical cell of claim 7 wherein said metals are platinum and germanium.
Claim 11
Dependent Claim
13 words
The electrochemical cell of claim 7 wherein said metals are platinum and tin.
Claim 12
Dependent Claim
13 words
The electrochemical cell of claim 7 wherein said metals are platinum and lead.
Claim 13
Dependent Claim
14 words
The electrochemical cell of claim 7 wherein said metals are platinum, nickel and rhenium.
Claim 14
Dependent Claim
16 words
The electrochemical cell of claim 1 wherein said refractory oxide is preimpregnated with an inorganic salt.
Claim 15
Dependent Claim
13 words
The electrochemical cell of claim 13 wherein said inorganic salt is sodium chloride.
Claim 16
Dependent Claim
15 words
The electrochemical cell of claim 1 wherein said electrode forms the cathode of said cell.
Claim 17
Dependent Claim
15 words
The electrochemical cell of claim 15 wherein said electrode forms the anode of said cell.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |