US3413114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovering osmium
Assignee: Huntington Alloys Corp
•
Filing: 1965-11-08
•
Granted: 1968-11-26
•
Expires: 1985-11-08
Abstract
No abstract record available.
Inventors
- 👤 Illis Alexander
- 👤 Brandt Bernardus Jacobus
- 👤 Manson Alan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:17
CPC Classifications
C; C22; C22B; C22B11/00; C22B11/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
THE PROCESS OF RECOVERING OSMIUM FROM A MATERIAL CONTAINING ASMIUM AND BASE METALS WICH COMPRISES SULFATING SAID MATERIAL AT A TEMPERATURE BELOW ABOUT 500* F. WITH CONCENTRATED SULFURIC ACID TO SOLUBILIZE THE BASE METALS, LEACHING THE ROASTED MATERIAL TO REMOVE THE BASE METALS AND RECOVERING OSMIUM FROM THE RESIDUE.
Claim 2
Dependent Claim
49 words
THE PROCESS OF RECOVERING OSMIUM FROM A MATERIAL CONTAINING ASMIUM AND BASE METALS WICH COMPRISES SULFATING SAID MATERIAL AT A TEMPERATURE BELOW ABOUT 500* F. WITH CONCENTRATED SULFURIC ACID TO SOLUBILIZE THE BASE METALS, LEACHING THE ROASTED MATERIAL TO REMOVE THE BASE METALS AND RECOVERING OSMIUM FROM THE RESIDUE.
References Cited (Backward Citations)
US1896807A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |