US2730189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Platinum recovery
Assignee: Evonik Operations GmbH
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Filing: 1951-02-02
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Granted: 1956-01-10
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Expires: 1971-02-02
Abstract
No abstract record available.
Inventors
- 👤 Holzmann Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:52
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/20; C01B21/24; C01B21/26; C01B21/267; B; B01; B01J; B01J23/00; B01J23/90; B01J23/96; C01G; C01G55/00; C22; C22B; C22B11/00; C22B11/02; C22B11/021; C22B11/026; C22B11/028; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y02P20/00; Y02P20/50; Y02P20/584; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2944
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN AN APPARATUS FOR CARRYING OUT HIGH TEMPERATURE CATALYTIC REACTIONS EMPLOYING A PLATINUM CATALYST IN WHICH HIGHLY HEATED REACTION GASES LEAVING THE CATALYST CONTAIN PLATINUM LOST FROM THE CATALYST, MEANS FOR COLLECTING THE PLATINUM CONTAINED IN THE REACTION GASES LEAVING THE PLATINUM CATALYST CONSISTING OF AT LEAST ONE FINE MESHED WOVEN NETTING HAVING A METALLIC SURFACE COMPRISING A NOBLE METAL SELECTED FROM THE GROUP CONSISTING OF GOLD, SILVER AND PALLADIUM ARRANGED ACROSS THE PATH OF THE HIGHLY HEATED REACTION GASES LEAVING THE CATALYST.
Claim 2
Dependent Claim
83 words
IN AN APPARATUS FOR CARRYING OUT HIGH TEMPERATURE CATALYTIC REACTIONS EMPLOYING A PLATINUM CATALYST IN WHICH HIGHLY HEATED REACTION GASES LEAVING THE CATALYST CONTAIN PLATINUM LOST FROM THE CATALYST, MEANS FOR COLLECTING THE PLATINUM CONTAINED IN THE REACTION GASES LEAVING THE PLATINUM CATALYST CONSISTING OF AT LEAST ONE FINE MESHED WOVEN NETTING HAVING A METALLIC SURFACE COMPRISING A NOBLE METAL SELECTED FROM THE GROUP CONSISTING OF GOLD, SILVER AND PALLADIUM ARRANGED ACROSS THE PATH OF THE HIGHLY HEATED REACTION GASES LEAVING THE CATALYST.
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) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |