Patent US2604441A successfully refreshed from Google Patents.
US2604441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing inorganic compounds of increased oxidation state
Assignee: Pennsylvania Salt Manufacturing Co
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Filing: 1947-11-04
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Granted: 1952-07-22
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Expires: 1967-11-04
Abstract
No abstract record available.
Inventors
- 👤 Russell E Cushing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:21
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/02; B; B03; B03C; B03C1/00; B03C1/002; C25B1/00; C25B1/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
THE METHOD OF PRODUCING AN INORGANIC COMPOUND OF AN INCREASED OXIDATION STATE COMPRISING INSERTING AN ELECTROLYTE FORM OF A WATER SOLUTION OF A CORRESPONDING COMPOUND OF LOWER STATE OF OXIDATION A PAIR OF ELECTRODES WITH ELECTRIC LEADS CONNECTED THERETO, SAID ELECTRODES COMPRISING AN ANODE AND A CATHODE, SAID ANODE BEING FORMED OF MATERIALL OF THE GROUP CONSISTING OF PLATINUM, GOLD, TANTALUM, IRIDIUM, AND PALLADIUM AND HAVING AN ACTIVE SURFACE OF SUBSTANTIALLY UNIFORM WIDTH AND A BODY OF PROGRESSIVELY DECREASING CROSS-SECTIONAL AREA FROM ONE END TO THE OTHER THE CONDUCTIVITY BEING GREATEST AT ITS END OF GREATEST CROSS-SECTIONAL AREA AND PROGRESSIVELY DECREASEING WITH DECREASE IN CROSS-SECTIONAL AREA TOWARD ITS END OF SMALLEST CROSS-SECTIONAL AREA MAINTAINING SUBSTANTIALLY EQUAL THE POTENTIAL BETWEEN ALL FACES AREA OF SAID ELECTRODES BY PASSING SUBSTANTIALLY ALL OF THE CURRENT THROUGH SAID ANODE PORTION OF GREATEST CONDUCTIVITY AND PASSING SUBSTANTIALLY EQUAL INCREMENTS OF CURRENT FROM SAID ANODE TO SAID ELECTROLYTE AT VARIOUS PORTIONS OF SAID ANODE SPACED FROM SAID PORTION OF GREATEST CONDUCTIVITY, AND THEREBY PROGRESSIVELY DECREASING THE FLOW OF CURRENT THROUGH SAID ANODE AT SUCCESSIVE PORTIONS WITH DECREASE OF CONDUCTIVITY IN SAID ANODE.
Claim 2
Independent Claim
186 words
THE METHOD OF PRODUCING AN INORGANIC COMPOUND OF AN INCREASED OXIDATION STATE COMPRISING INSERTING AN ELECTROLYTE FORM OF A WATER SOLUTION OF A CORRESPONDING COMPOUND OF LOWER STATE OF OXIDATION A PAIR OF ELECTRODES WITH ELECTRIC LEADS CONNECTED THERETO, SAID ELECTRODES COMPRISING AN ANODE AND A CATHODE, SAID ANODE BEING FORMED OF MATERIALL OF THE GROUP CONSISTING OF PLATINUM, GOLD, TANTALUM, IRIDIUM, AND PALLADIUM AND HAVING AN ACTIVE SURFACE OF SUBSTANTIALLY UNIFORM WIDTH AND A BODY OF PROGRESSIVELY DECREASING CROSS-SECTIONAL AREA FROM ONE END TO THE OTHER THE CONDUCTIVITY BEING GREATEST AT ITS END OF GREATEST CROSS-SECTIONAL AREA AND PROGRESSIVELY DECREASEING WITH DECREASE IN CROSS-SECTIONAL AREA TOWARD ITS END OF SMALLEST CROSS-SECTIONAL AREA MAINTAINING SUBSTANTIALLY EQUAL THE POTENTIAL BETWEEN ALL FACES AREA OF SAID ELECTRODES BY PASSING SUBSTANTIALLY ALL OF THE CURRENT THROUGH SAID ANODE PORTION OF GREATEST CONDUCTIVITY AND PASSING SUBSTANTIALLY EQUAL INCREMENTS OF CURRENT FROM SAID ANODE TO SAID ELECTROLYTE AT VARIOUS PORTIONS OF SAID ANODE SPACED FROM SAID PORTION OF GREATEST CONDUCTIVITY, AND THEREBY PROGRESSIVELY DECREASING THE FLOW OF CURRENT THROUGH SAID ANODE AT SUCCESSIVE PORTIONS WITH DECREASE OF CONDUCTIVITY IN SAID ANODE.
References Cited (Backward Citations)
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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) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |