Patent US3396091A successfully refreshed from Google Patents.
US3396091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of forming electrocatalytic surfaces
Assignee: General Electric Co
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Filing: 1965-03-18
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Granted: 1968-08-06
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Expires: 1985-03-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Ernest H Lyons
- 👤 Russell M Dempsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:11
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/50; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/075; C25B11/081; C25B11/091; C25B11/097
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A PROCESS OF PRODUCING A PLATINUM METAL ELECTRODE COMPRISING, METAL IN A CONCENTRATION OF FROM 3 TO 20 GRAMS PER LITER, CONCENTRATED HYDROCHLORIC ACID IN A PROPORTION OF FROM 0 TO 100 MILLILITERS PER LITER, A SELECTED BASE METAL IN AN AMOUNT SUFFICIENT TO FORM A WEIGHT RATIO OF THE PLATINUM METAL TO THE SELECTED BASE METAL OF FROM 1:1 TO 10:1, AND A DISSOLVED QUANTITY OF A SALT SELECTEDE FROM THE GROUP CONSISTING OF LITHIUM, SODIUM, AND ALKALINE EARTH METAL HALIDES SUFFICIENT TO COMPLETELY SOLUBILIZE THE SELECTED BASE METAL, IMMERSING AN ANODE AND A CATHODE IN THE PLATING BATH, MAINTAIINING A PLATING BATH TEMPERATURE OF FOM 30* C. TO 100*C. AND A CATHODE CURRENT DENSITY OF FROM 5 TO 50 MILLIAMPERES PER SQUARE CENTIMETER, REMOVING THE CATHODE FROM THE PLATING BATH, RINSING THE CATHODE IN A SOLUTION CONSISTING ESSENTIALLY OF WATER AND A SALT CHOSEN FROM THE CLASS CONSISTING OF LITHIUM, SODIUM, AND ALKALINE EARTH METAL BALIDES, RINSING THE CATHODE IN WATER, AND SELECTING ETCHING THE SELECTED BASE METAL FROM THE PLATINUM METAL DEPOSITED ON THE CATHODE.
Claim 2
Dependent Claim
178 words
A PROCESS OF PRODUCING A PLATINUM METAL ELECTRODE COMPRISING, METAL IN A CONCENTRATION OF FROM 3 TO 20 GRAMS PER LITER, CONCENTRATED HYDROCHLORIC ACID IN A PROPORTION OF FROM 0 TO 100 MILLILITERS PER LITER, A SELECTED BASE METAL IN AN AMOUNT SUFFICIENT TO FORM A WEIGHT RATIO OF THE PLATINUM METAL TO THE SELECTED BASE METAL OF FROM 1:1 TO 10:1, AND A DISSOLVED QUANTITY OF A SALT SELECTEDE FROM THE GROUP CONSISTING OF LITHIUM, SODIUM, AND ALKALINE EARTH METAL HALIDES SUFFICIENT TO COMPLETELY SOLUBILIZE THE SELECTED BASE METAL, IMMERSING AN ANODE AND A CATHODE IN THE PLATING BATH, MAINTAIINING A PLATING BATH TEMPERATURE OF FOM 30* C. TO 100*C. AND A CATHODE CURRENT DENSITY OF FROM 5 TO 50 MILLIAMPERES PER SQUARE CENTIMETER, REMOVING THE CATHODE FROM THE PLATING BATH, RINSING THE CATHODE IN A SOLUTION CONSISTING ESSENTIALLY OF WATER AND A SALT CHOSEN FROM THE CLASS CONSISTING OF LITHIUM, SODIUM, AND ALKALINE EARTH METAL BALIDES, RINSING THE CATHODE IN WATER, AND SELECTING ETCHING THE SELECTED BASE METAL FROM THE PLATINUM METAL DEPOSITED ON THE CATHODE.
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) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |