US2865734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of metal-containing materials
Assignee: British Iron and Steel Research Association BISRA
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Filing: 1956-07-16
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Granted: 1958-12-23
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Expires: 1976-07-16
Abstract
No abstract record available.
Inventors
- 👤 Klemantaski Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:30
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/14; C21B13/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A METHOD OF TREATING METALLIC ORES COMPRISING SUPPLYING CONTINUOUSLY THROUGH AN ENTRY PASSAGE SAID ORES IN DISPERSED STATE TO A REACTION PASSAGE, CAUSING SAID ORES TO PASS ALONG SAID PASSAGE TO A HIGH TEMPERATURE REGION, AT LEAST PARTIALLY REDUCING SAID ORES DURING MOVEMENT ALONG SAID PASSAGE, AGGLOMERATING THE METAL AT SAID HIGH TEMPERATURE REGION, CONTROLLING THE OXYGEN POTENTIAL OF THE METAL AT SAID HIGH TEMPERATURE REGION, COLLECTING SAID METAL AND PASSING THE GASES FROM SAID REGION OVER THE
Claim 2
Independent Claim
78 words
A METHOD OF TREATING METALLIC ORES COMPRISING SUPPLYING CONTINUOUSLY THROUGH AN ENTRY PASSAGE SAID ORES IN DISPERSED STATE TO A REACTION PASSAGE, CAUSING SAID ORES TO PASS ALONG SAID PASSAGE TO A HIGH TEMPERATURE REGION, AT LEAST PARTIALLY REDUCING SAID ORES DURING MOVEMENT ALONG SAID PASSAGE, AGGLOMERATING THE METAL AT SAID HIGH TEMPERATURE REGION, CONTROLLING THE OXYGEN POTENTIAL OF THE METAL AT SAID HIGH TEMPERATURE REGION, COLLECTING SAID METAL AND PASSING THE GASES FROM SAID REGION OVER THE
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) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |