US3284332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell electrode
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1961-05-29
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Granted: 1966-11-08
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Expires: 1981-05-29
Abstract
No abstract record available.
Inventors
- 👤 Elroy M Gladrow
- 👤 Charles E Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:36
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/96; C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS OF PREPARING AN IMPROVED CARBON ELECTRODE WHICH COMPRISES CONTACTING SAID ELECTRODE WITH AN AQUEOUS SOLUTION OF A SALT OF A CATALYTIC METAL, WHICH FORMS AN INSOLUBLE SULFIDE, UNTIL THE METAL ION OF SAID SALT IS ADSORBED ON SAID ELECTRODE, CONTACTING THE ELECTRODE WITH AN IONIZABLE SULFIDE UNTIL SAID METAL SULFIDE ON CONVERTED TO THE CORRESPONDING INSOLUBLE METAL SULFIDE ON THE ELECTRODE SURFAE, HEATING THE ELECTRODE IN AN INERT ATMOSPHERE AT A TEMPERATURE OF ABOUT 200* TO 1000*F., HEATING THE ELECTRODE WITH HYDROGEN AT AN ELEVATED TEMPERATURE IN THE RANGE OF ABOUT 800* TO 1200*C.
Claim 2
Dependent Claim
96 words
A PROCESS OF PREPARING AN IMPROVED CARBON ELECTRODE WHICH COMPRISES CONTACTING SAID ELECTRODE WITH AN AQUEOUS SOLUTION OF A SALT OF A CATALYTIC METAL, WHICH FORMS AN INSOLUBLE SULFIDE, UNTIL THE METAL ION OF SAID SALT IS ADSORBED ON SAID ELECTRODE, CONTACTING THE ELECTRODE WITH AN IONIZABLE SULFIDE UNTIL SAID METAL SULFIDE ON CONVERTED TO THE CORRESPONDING INSOLUBLE METAL SULFIDE ON THE ELECTRODE SURFAE, HEATING THE ELECTRODE IN AN INERT ATMOSPHERE AT A TEMPERATURE OF ABOUT 200* TO 1000*F., HEATING THE ELECTRODE WITH HYDROGEN AT AN ELEVATED TEMPERATURE IN THE RANGE OF ABOUT 800* TO 1200*C.
References Cited (Backward Citations)
US934988A
Cited
US2938064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |