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Patent US3343908A successfully refreshed from Google Patents.
US3343908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing sulfur trioxide from combustion gases to reduce the corrosive effects thereof
Assignee: Evonik Operations GmbH
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Filing: 1964-02-06
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Granted: 1967-09-26
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Expires: 1984-02-06
Abstract
No abstract record available.
Inventors
- 👤 Wickert Kurt Ferdinand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:32
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/12; C23; C23F; C23F11/00; C23F11/02; C23F15/00; F; F28; F28G; F28G9/00; C10L1/1233; C10L1/1291; Y; Y10; Y10S; Y10S534/00; Y10S534/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR REDUCING DEWPOINT ACID CORROSION AND FOULING OF SURFACES CONTACTED AT TEMPERATURES BETWEEN BELOW ABOUT 400*C. AND THE AMBIENT ATMOSPHERIC TEMPERATURE WITH COMBUSTION GASES CONTAINING SULFUR TRIOXIDE AND WATER VAPOR COMPRISING INCORPORATING IN A FINE STATE OF DISTRIBUTION A MIXTURE OF (1) FINELY DIVIDED BASIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM OXIDE, MAGNESIUM OXIDE, MAGNESIUM CARBONATE, BASIC MAGNESIUM CARBONATE AND MIXTURES THEREOF AND
Claim 2
Dependent Claim
67 words
A PROCESS FOR REDUCING DEWPOINT ACID CORROSION AND FOULING OF SURFACES CONTACTED AT TEMPERATURES BETWEEN BELOW ABOUT 400*C. AND THE AMBIENT ATMOSPHERIC TEMPERATURE WITH COMBUSTION GASES CONTAINING SULFUR TRIOXIDE AND WATER VAPOR COMPRISING INCORPORATING IN A FINE STATE OF DISTRIBUTION A MIXTURE OF (1) FINELY DIVIDED BASIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM OXIDE, MAGNESIUM OXIDE, MAGNESIUM CARBONATE, BASIC MAGNESIUM CARBONATE AND MIXTURES THEREOF AND
References Cited (Backward Citations)
US2718453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |