US4560443A
Expired / Lapsed
US
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Gas diffusion anode
Assignee: BP Chemicals Ltd
•
Filing: 1983-12-05
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Granted: 1985-12-24
•
Expires: 2003-12-05
Abstract
Abstract Disclosed is a gaseous diffusion anode and a process for the production of gaseous hydrogen chloride in an electrolytic cell.
Inventors
- 👤 Peter C. Foller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:06
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B1/00; C25B1/01; C25B1/24; C25B1/26; C25B11/042; C25B11/048
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
40 words
A gas diffusion anode comprising an electrically-conductive composite comprising: (a) amine-functionalized carbon; (b) a noble metal catalyst which catalyzes the production of hydrogen ions from hydrogen; and (c) a polymeric material, said composite being held together by said polymeric material.
Claim 2
Dependent Claim
40 words
A gas diffusion anode comprising an electrically-conductive composite comprising: (a) amine-functionalized carbon; (b) a noble metal catalyst which catalyzes the production of hydrogen ions from hydrogen; and (c) a polymeric material, said composite being held together by said polymeric material.
Claim 3
Dependent Claim
10 words
The anode of claim 1 wherein said polymer is polytetrafluoroethylene.
Claim 4
Dependent Claim
20 words
The anode of claim 2 wherein said amine-functionalized carbon has a surface area of 50 to 250 meters 2 /gram.
References Cited (Backward Citations)
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US3864236A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-23 | 1989-06-24 | 1989-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-23 | 1993-06-24 | 1993-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-23 | 1997-06-24 | 1997-12-24 | $7700.00 | Window Closed / Lapsed |