US2768062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for increasing the so2 content of converter gases
Assignee: Aurubis AG
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Filing: 1952-10-17
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Granted: 1956-10-23
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Expires: 1972-10-17
Abstract
No abstract record available.
Inventors
- 👤 Kartenbeck Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:04
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/48; C01B17/50; C01B17/52
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
84 words
IN A PROCESS FOR CONVERTING MOLTEN SULFIDIC MATTE BY BLOWING AIR THERETHROUGH IN A CONVERTER AND IN WHICH HOT SO2 CONTAINING GASES LEAVING SAID CONVERTER ARE DRAWN UP THROUGH A HOOD WITH DIRECT ACCESS OF ATMOSPHERIC AIR TO THE INTERIOR OF THE HOOD BETWEEN THE CONVERTER AND THE HOOD, AND IN WHICH THE SO2 CONTAINING GASES LEAVING SAID HOOD ARE COOLED, THE STEPS WHICH COMPRISE RECYCLING A PORTION OF SAID COOLED SO2 CONTAINING GASES TO SAID HOOD, INTIMATELY MIXING SUCH COOL RECYCLED SO2 CONTAIN-
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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) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |