US2552709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the purification of rhodium
Assignee: Huntington Alloys Corp
•
Filing: 1950-07-05
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Granted: 1951-05-15
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Expires: 1970-07-05
Abstract
No abstract record available.
Inventors
- 👤 Clements Francis Sidney
- 👤 Raper Alan Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:26
CPC Classifications
C; C01; C01G; C01G5/00; C01G5/003; C01B; C01B19/00; C01G19/00; C01G19/003; C01G21/00; C01G21/003; C01G29/00; C01G29/003; C01G3/00; C01G3/003; C01G37/00; C01G37/003; C01G45/00; C01G45/01; C01G49/00; C01G49/0009; C01G55/00; C01G55/001; C22; C22B; C22B3/00; C22B3/20; C22B3/42; C01P; C01P2006/00; C01P2006/80; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS FOR THE PURIFICATION OF RHODIUM WHICH COMPRISES TREATING AN AQUEOUS SOLUTION OF A WATER-SOLUBLE COMPLEX RHODIUM COMPOUND IN WHICH THE RHODIUM IS PRESENT IN THE ANION IN WHICH THE CONCENTRATION OF THE SAID COMPOUND IS UP TO 1/10 MOLAR WITH A CATION EXCHANGE RESIN CONTAINING A SULPHONIC ACID GROUP TO REMOVE IMPURITIES FROM THE SOLUTION.
Claim 2
Dependent Claim
57 words
A PROCESS FOR THE PURIFICATION OF RHODIUM WHICH COMPRISES TREATING AN AQUEOUS SOLUTION OF A WATER-SOLUBLE COMPLEX RHODIUM COMPOUND IN WHICH THE RHODIUM IS PRESENT IN THE ANION IN WHICH THE CONCENTRATION OF THE SAID COMPOUND IS UP TO 1/10 MOLAR WITH A CATION EXCHANGE RESIN CONTAINING A SULPHONIC ACID GROUP TO REMOVE IMPURITIES FROM THE SOLUTION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |