US3206382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of platinum or palladium
Assignee: Johnson Matthey PLC
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Filing: 1960-09-28
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Granted: 1965-09-14
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Expires: 1980-09-28
Abstract
No abstract record available.
Inventors
- 👤 Wilson Leslie Frank
- 👤 Hopkin Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:59
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A METHOD OF ELECTRODEPOSITING A METAL SELECTED FROM THE GROUP CONSISTING OF PLATINUM AND PALLADIUM WHICH METHOD COMPRISES ELECTROLYSING AN ELECTROLYTE HAVING A PH VALUE BELOW 2 AND CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF A COMPLEX NITRITO COMPOUND OF THE SELECTED METAL, SAID COMPOUND HAVING A GENERAL FORMULA SELECTED FROM THE GROUP: A2(X(NO2)2 R''(4-A)) AND A2(X(NO2)A R"((4-A)/2)) WHEREIN
Claim 2
Independent Claim
59 words
A METHOD OF ELECTRODEPOSITING A METAL SELECTED FROM THE GROUP CONSISTING OF PLATINUM AND PALLADIUM WHICH METHOD COMPRISES ELECTROLYSING AN ELECTROLYTE HAVING A PH VALUE BELOW 2 AND CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF A COMPLEX NITRITO COMPOUND OF THE SELECTED METAL, SAID COMPOUND HAVING A GENERAL FORMULA SELECTED FROM THE GROUP: A2(X(NO2)2 R''(4-A)) AND A2(X(NO2)A R"((4-A)/2)) WHEREIN
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |