US3146074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple bed reactor
Assignee: GEA Group AG
•
Filing: 1961-09-06
•
Granted: 1964-08-25
•
Expires: 1981-09-06
Abstract
No abstract record available.
Inventors
- 👤 Drechsel Herbert
- 👤 Grimm Hugo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:45
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/69; C01B17/74; C01B17/76; C01B17/80; C01B17/803; B; B01; B01J; B01J8/00; B01J8/02; B01J8/04; B01J8/0446; B01J8/0449; B01J8/0453; B01J8/0492; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00106; B01J2208/00168; B01J2208/00212; B01J2208/00221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A MULTIPLE BED REACTOR FOR THE CATALYTIC CONVERSION OF SO2 CONTAINING GASES TO SO3 INCLUDING A PLURALITY OF CONTACT CATALYTIC BEDS ARRANGED IN SERIES TO RECEIVE SUCH GAS, AN INDIRECT HEAT EXCHANGER TO HEAT DIRECTLY GAS PASSING TO ONE OF SAID BEDS AND RECEIVING HEATED GAS FROM ONE OF SAID BEDS, SAID HEAT EXCHANGER BEING POSITIONED IN A RING SURROUNDING AND IMMEDIATELY ADJOINING THE FIRST CONTACT BED OF THE SERIES AND HAVING MEANS TO DIRECT SUCH GAS TO BE HEATED ACROSS THE HEATER IN CO-CURRENT AND IN COUNTER-CURRENT FLOW DIRECTIONS WITH RESPECT TO THE HEATED GAS.
Claim 2
Dependent Claim
96 words
A MULTIPLE BED REACTOR FOR THE CATALYTIC CONVERSION OF SO2 CONTAINING GASES TO SO3 INCLUDING A PLURALITY OF CONTACT CATALYTIC BEDS ARRANGED IN SERIES TO RECEIVE SUCH GAS, AN INDIRECT HEAT EXCHANGER TO HEAT DIRECTLY GAS PASSING TO ONE OF SAID BEDS AND RECEIVING HEATED GAS FROM ONE OF SAID BEDS, SAID HEAT EXCHANGER BEING POSITIONED IN A RING SURROUNDING AND IMMEDIATELY ADJOINING THE FIRST CONTACT BED OF THE SERIES AND HAVING MEANS TO DIRECT SUCH GAS TO BE HEATED ACROSS THE HEATER IN CO-CURRENT AND IN COUNTER-CURRENT FLOW DIRECTIONS WITH RESPECT TO THE HEATED GAS.
References Cited (Backward Citations)
US1321358A
Cited
US1618265A
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US1682787A
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US1960386A
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US1821956A
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US1949122A
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US2399560A
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US2438242A
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US2846291A
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US2995426A
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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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |