US3049422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovering valuable rare metals by volatilization
Assignee: Individual
•
Filing: 1959-12-08
•
Granted: 1962-08-14
•
Expires: 1979-12-08
Abstract
No abstract record available.
Inventors
- 👤 Edson R Wolcott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:18
CPC Classifications
C; C22; C22B; C22B11/00; C22B11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A PROCESS FOR SEPARATING AND RECOVERING METALS OF THE GROUP COMPOSED OF GOLD, PLATINUM, AND PLATINUM COMPOUNDS FROM FINELY DIVIDED ORE CONTAINING METALS OF SAID GROUP WHICH COMPRISES TREATING THE FINELY DIVIDED ORE WITH A GASEOUS MIXTURE OF NITROSYL CHLORIDE AND CHLORINE PRODUCED FROM AQUA REGIA, AT A TEMPERATURE SUFFICIENTLY HIGH TO CAUSE ONLY THE METALS OF SAID GROUP TO FORM VOLATILE COMPOUNDS, AND SEPARATING SAID VOLATILE COMPOUNDS FROM THE RESIDUE OF THE ORE.
Claim 2
Dependent Claim
74 words
A PROCESS FOR SEPARATING AND RECOVERING METALS OF THE GROUP COMPOSED OF GOLD, PLATINUM, AND PLATINUM COMPOUNDS FROM FINELY DIVIDED ORE CONTAINING METALS OF SAID GROUP WHICH COMPRISES TREATING THE FINELY DIVIDED ORE WITH A GASEOUS MIXTURE OF NITROSYL CHLORIDE AND CHLORINE PRODUCED FROM AQUA REGIA, AT A TEMPERATURE SUFFICIENTLY HIGH TO CAUSE ONLY THE METALS OF SAID GROUP TO FORM VOLATILE COMPOUNDS, AND SEPARATING SAID VOLATILE COMPOUNDS FROM THE RESIDUE OF THE ORE.
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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) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |