US2866740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of rhodium
Assignee: Huntington Alloys Corp
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Filing: 1957-05-02
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Granted: 1958-12-30
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Expires: 1977-05-02
Abstract
No abstract record available.
Inventors
- 👤 Reid Frank Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:51
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
AN ELECTROLYTE FOR PRODUCING SUBSTANTIALLY CRACKFREE RHODIUM ELECTRODEPOSITS COMPRISING AN AQUEOUS ACIDIC BATH CONTAINIGN DISSOLVED RHODIUM DERIVED FROM AT LEAST ONE COMPOUND FROM THE GROUP CONSISTING OF RHODIUM SULPHATE, RHODIUM PHOSPHATE AND RHODIUM FLUOBORATE IN AN AMOUNT TO PROVIDE FROM ABOUT 5 TO ABOUT 20 GRAMS PER LITER OF RHODIUM, FREE ACID IN AN AMOUNT SUFFICIENT TO PREVENT HYDROLYSIS AND A COMPOUND FROM THE GROUP CONSISTING OF SELENIC ACID AND ALKALI METAL SALTS THEREOF IN AN AMOUNT EQUIVALIENT TO ABOUT 0.05 TO ABOUT 25 GRAMS PER LITER OF SELENIC ACID.
Claim 2
Dependent Claim
90 words
AN ELECTROLYTE FOR PRODUCING SUBSTANTIALLY CRACKFREE RHODIUM ELECTRODEPOSITS COMPRISING AN AQUEOUS ACIDIC BATH CONTAINIGN DISSOLVED RHODIUM DERIVED FROM AT LEAST ONE COMPOUND FROM THE GROUP CONSISTING OF RHODIUM SULPHATE, RHODIUM PHOSPHATE AND RHODIUM FLUOBORATE IN AN AMOUNT TO PROVIDE FROM ABOUT 5 TO ABOUT 20 GRAMS PER LITER OF RHODIUM, FREE ACID IN AN AMOUNT SUFFICIENT TO PREVENT HYDROLYSIS AND A COMPOUND FROM THE GROUP CONSISTING OF SELENIC ACID AND ALKALI METAL SALTS THEREOF IN AN AMOUNT EQUIVALIENT TO ABOUT 0.05 TO ABOUT 25 GRAMS PER LITER OF SELENIC ACID.
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) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |