US3287172A
Expired / Lapsed
US
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Electrode and method for preparation thereof
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1962-05-29
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Granted: 1966-11-22
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Expires: 1982-05-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Shropshire
- 👤 Charles E Thomspon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:09
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/96; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN THE PREPARATION OF A NON-SACRIFICIAL CARBON ELECTRODE IMPREGNATED WITH A NOBLE METAL CATALYST WHICH PREPARATION COMPRISES SOAKING A CARBON STRUCTURE IN AN AQUEOUS SOLUTION OF A WATER-SOLUBLE COMPOUND CONTAINING SAID NOBLE METAL AND SUBSEQUENTLY HEATING THE RESULTING IMPREGNATED CARBON STRUCTURE, THE IMPROVEMENT WHICH COMPRISES HEATING SAID IMPREGNATED CARBON STRUCTURE IN AN ATMOSPHERE CONSISTING ESSENTIALLY OF HYDROGEN GAS AT A TEMPERATURE IN THE RANGE OF ABOUT 1200* TO 1800*F. UNTIL THE NOBLE METAL COMPONENT OF SAID COMPOUND IS REDUCED TO ELEMENTAL NOBLE METAL.
Claim 2
Dependent Claim
83 words
IN THE PREPARATION OF A NON-SACRIFICIAL CARBON ELECTRODE IMPREGNATED WITH A NOBLE METAL CATALYST WHICH PREPARATION COMPRISES SOAKING A CARBON STRUCTURE IN AN AQUEOUS SOLUTION OF A WATER-SOLUBLE COMPOUND CONTAINING SAID NOBLE METAL AND SUBSEQUENTLY HEATING THE RESULTING IMPREGNATED CARBON STRUCTURE, THE IMPROVEMENT WHICH COMPRISES HEATING SAID IMPREGNATED CARBON STRUCTURE IN AN ATMOSPHERE CONSISTING ESSENTIALLY OF HYDROGEN GAS AT A TEMPERATURE IN THE RANGE OF ABOUT 1200* TO 1800*F. UNTIL THE NOBLE METAL COMPONENT OF SAID COMPOUND IS REDUCED TO ELEMENTAL NOBLE METAL.
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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |