Patent US3116165A successfully refreshed from Google Patents.
US3116165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making fuel cell electrodes and the like
Assignee: Individual
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Filing: 1961-06-21
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Granted: 1963-12-31
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Expires: 1981-06-21
Abstract
No abstract record available.
Inventors
- 👤 Allen J Hipp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:14
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/88; H01M4/8803; H01M4/8817; H01M4/8825; H01M4/8846; H01M4/885; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
222 words
THE METHOD OF MAKING A CATALYTIC ACTIVE ELECTRICALLY CONDUCTIVE MEMBER COMPRISING: IMMERSING A POROUS SINTERED NICKEL PLAQUE INTO A FIRST SOLUTION CONTAINING HYDROCHLORIC ACID, FROM ABOUT ONE TO ABOUT THREE PERCENT OF THE CHLORIDE SALT OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF PALLADIUM, IRIDIUM, RHODIUM, OSIMUM AND RUTHENIUM, SAID SOLUTION HAVING A PH OF ABOUT 1.0 AND A COLOR CHARACTERISTIC DISTINGUISHABLE FROM GREEN; HEATING SAID SOLUTION TO A TEMPERATURE OF ABOUT 50*C., WITH SAID PLAQUE IMMERSED THEREIN, UNTIL SAID ELEMENT DEPOSITS INTERMITTENTLY UPON SAID PLAQUE AS INDICATED BY THE COLOR OF SAID SOLUTION BECOMING YELLOWISH-GREEN; HEATING SAID YELLOWISH-GREEN SOLUTION, WITH SAID PLAQUE IMMERSED THEREIN, TO A TEMPERATURE OF ABOUT 50*C.-80* C. WHILE SAID SOLUTION ETCHES NEW ACTIVE CENTERS INTO SAID PLAQUE AS INDICATED BY AND UNTIL SAID YELLOWISH-GREEN SOLUTION BECOMES A GREEN SOLUTION; REMOVING SAID PLAQUE FROM SAID GREEN SOLUTION; RINSING SAID PLAQUE; IMMERSING SAID PLAQUE INTO A SECOND SOLUTION CONTAINING HYDROCHLORIC ACID, FROM ABOUT ONE TO ABOUT THREE PERCENT OF THE CHLORIDE SALT OF SAID ELEMENT SELECTED FOR SAID FIRST SOLUTION, SAID SOLUTION HAVING A PH OF ABOUT 190 AND A COLOR CHARACTERISTIC DISTINGUISHABLE FROM GREEN; HEATING SAID SOLUTION TO A TEMPERATURE OF ABOUT 30*C.-50*C., WITH SAID PLAQUE IMMERSED THEREIN, UNTIL SAID ELEMENT DEPOSITS INTERMITTENTLY UPON SAID PLAQUE, INTERMEDIATE FORMER DEPOSITS OF SAID ELEMENT, AS INDICATED BY THE COLOR
Claim 2
Independent Claim
222 words
THE METHOD OF MAKING A CATALYTIC ACTIVE ELECTRICALLY CONDUCTIVE MEMBER COMPRISING: IMMERSING A POROUS SINTERED NICKEL PLAQUE INTO A FIRST SOLUTION CONTAINING HYDROCHLORIC ACID, FROM ABOUT ONE TO ABOUT THREE PERCENT OF THE CHLORIDE SALT OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF PALLADIUM, IRIDIUM, RHODIUM, OSIMUM AND RUTHENIUM, SAID SOLUTION HAVING A PH OF ABOUT 1.0 AND A COLOR CHARACTERISTIC DISTINGUISHABLE FROM GREEN; HEATING SAID SOLUTION TO A TEMPERATURE OF ABOUT 50*C., WITH SAID PLAQUE IMMERSED THEREIN, UNTIL SAID ELEMENT DEPOSITS INTERMITTENTLY UPON SAID PLAQUE AS INDICATED BY THE COLOR OF SAID SOLUTION BECOMING YELLOWISH-GREEN; HEATING SAID YELLOWISH-GREEN SOLUTION, WITH SAID PLAQUE IMMERSED THEREIN, TO A TEMPERATURE OF ABOUT 50*C.-80* C. WHILE SAID SOLUTION ETCHES NEW ACTIVE CENTERS INTO SAID PLAQUE AS INDICATED BY AND UNTIL SAID YELLOWISH-GREEN SOLUTION BECOMES A GREEN SOLUTION; REMOVING SAID PLAQUE FROM SAID GREEN SOLUTION; RINSING SAID PLAQUE; IMMERSING SAID PLAQUE INTO A SECOND SOLUTION CONTAINING HYDROCHLORIC ACID, FROM ABOUT ONE TO ABOUT THREE PERCENT OF THE CHLORIDE SALT OF SAID ELEMENT SELECTED FOR SAID FIRST SOLUTION, SAID SOLUTION HAVING A PH OF ABOUT 190 AND A COLOR CHARACTERISTIC DISTINGUISHABLE FROM GREEN; HEATING SAID SOLUTION TO A TEMPERATURE OF ABOUT 30*C.-50*C., WITH SAID PLAQUE IMMERSED THEREIN, UNTIL SAID ELEMENT DEPOSITS INTERMITTENTLY UPON SAID PLAQUE, INTERMEDIATE FORMER DEPOSITS OF SAID ELEMENT, AS INDICATED BY THE COLOR
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) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |