US3578390A
Expired / Lapsed
US
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Method of removing sulfur dioxide from gases containing the same
Assignee: Bergwerksverband GmbH
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Filing: 1969-05-27
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Granted: 1971-05-11
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Expires: 1989-05-27
Abstract
Abstract SULFUR DOXIDE IS REMOVED FROM GASES CONTAINING THE SAME, PARTICULARLY STEAM AND OXYGEN-CONTAINING WASTE GAS, BY INTIMATELY CONTACTING SUCH GAS AND AN ADSORBENT MATERIAL CONSISTING ESSENTIALLY OF A POROUS CARBONACEOUS MATERIAL WHICH IS IMPREGNATED WITH AN AMMONIUM OR ALKALI METAL IODIDE OR IODATE. THE CONTACTING IS CARRIED OUT AT AN ELEVATED TEMPERATURE WHICH MAY BE UP TO 200*C. AND PREFERABLY IS AT LEAST AS HIGH AS 100*C.
Inventors
- 👤 Martin Kruel
- 👤 Harald Juentgen
- 👤 Heinrich Drwatwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:22
CPC Classifications
B; B44; B44C; B44C3/00; B44C3/04; B44C3/046; B44C3/048; B01; B01D; B01D53/00; B01D53/02; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/508; B29; B29C; B29C49/00; B29C49/24; B29C49/2408; C; C01; C01C; C01C1/00; C01C1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |