Patent US2650160A successfully refreshed from Google Patents.
US2650160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of iron sponge from iron ore
Assignee: Beazer East Inc
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Filing: 1950-01-31
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Granted: 1953-08-25
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Expires: 1970-01-31
Abstract
No abstract record available.
Inventors
- 👤 Totzek Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:23
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/0073; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/122; Y02P10/134; Y10; Y10S; Y10S48/00; Y10S48/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A METHOD OF REDUCING SPONGE IRON ORE COMPRISING REACTING A SOLID CARBONACEOUS FUEL WITH A GAS CONTAINING AT LEAST 85% OXYGEN AT ABOVE TEMPERATURES SUITABLE FOR THE REDUCTION OF SPONGE IRON ORE TO PRODUCE A REDUCING GAS CONTAINING AT LEAST 70% BY VOLUME CARBON MONOXIDE AND HYDROGEN, THE PREPONDERANT PROPORTION OF SAID REDUCING GAS BEING CARBON MONOXIDE, COOLING SAID REDUCING GAS TO ABOUT 1000* C., CONTACTING SAID REDUCING GAS WITH SAID SPONGE IRON ORE IN AN AMOUNT SUFFICIENT TO REDUCE SAID IRON ORE TO AT LEAST 85% METALLIC IRON AND TO PRODUCE A SPENT REDUCING GAS CONTAINING SUBSTANTIALLY CARBON MONOXIDE, HYDROGEN, AND CARBON DIOXIDE, AND REMOVING CARBON DIOXIDE FROM SAID SPENT REDUCING GAS.
Claim 2
Independent Claim
113 words
A METHOD OF REDUCING SPONGE IRON ORE COMPRISING REACTING A SOLID CARBONACEOUS FUEL WITH A GAS CONTAINING AT LEAST 85% OXYGEN AT ABOVE TEMPERATURES SUITABLE FOR THE REDUCTION OF SPONGE IRON ORE TO PRODUCE A REDUCING GAS CONTAINING AT LEAST 70% BY VOLUME CARBON MONOXIDE AND HYDROGEN, THE PREPONDERANT PROPORTION OF SAID REDUCING GAS BEING CARBON MONOXIDE, COOLING SAID REDUCING GAS TO ABOUT 1000* C., CONTACTING SAID REDUCING GAS WITH SAID SPONGE IRON ORE IN AN AMOUNT SUFFICIENT TO REDUCE SAID IRON ORE TO AT LEAST 85% METALLIC IRON AND TO PRODUCE A SPENT REDUCING GAS CONTAINING SUBSTANTIALLY CARBON MONOXIDE, HYDROGEN, AND CARBON DIOXIDE, AND REMOVING CARBON DIOXIDE FROM SAID SPENT REDUCING GAS.
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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) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |