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Patent US2598087A successfully refreshed from Google Patents.
US2598087A
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Method for producing chlorine dioxide
Assignee: International Paper Canada Inc
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Filing: 1949-06-02
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Granted: 1952-05-27
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Expires: 1969-06-02
Abstract
No abstract record available.
Inventors
- 👤 Wayman Morris
- 👤 Rapson William Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:35
CPC Classifications
C; C01; C01B; C01B11/00; C01B11/02; C01B11/022; C01B11/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A CONTINUOUS PROCESS FOR THE PRODUCTION OF GASEOUS CHLORINE DIOXIDE BY THE REACTION BETWEEN GASEOUS SULPHUR DIOXIDE AND AN AQUEOUS SOLUTION OF A METALLIC CHLORATE, CONSISTING IN THE STEPS OF SUPPLYING A CONTINUOUS STREAM OF AN AQUEOUS SOLUTION OF A METALLIC CHLORATE TO A PACKED REACTION COLUMN AT SUCH A RATE AS TO DISTRIBUTE SAID AQUEOUS CHLORATE SOLUTION OVER THE SURFACES OF THE PACKING IN SAID REACTION COLUMN COCURRENTLY SUPPLYING A CONTINUOUS STREAM OF GASEOUS SULPHUR DIOXIDE AND AN INERT DILUENT GAS TO SAID REACTION COLUMN TO BRING SAID SULPHOR DIOXIDE INTO CONTACT WITH THE SURFACE OF THE AQUEOUS CHLORATE SOLUTION DISTRIBUTED OVER THE PACKING IN SAID COLUMN, EMPLOYING A HEAT EXCHANGE MEDIUM TO COOL SAID PACKED COLUMN IN THE ZONE OF GREATEST REACTION, AND CONTINUOUSLY WITHDRAWING FROM SAID REACTION COLUMN A GASEOUS MIXTURE CONTAINING CHLORINE DIOXIDE AND SAID INERT DILUENT GAS.
Claim 2
Dependent Claim
142 words
A CONTINUOUS PROCESS FOR THE PRODUCTION OF GASEOUS CHLORINE DIOXIDE BY THE REACTION BETWEEN GASEOUS SULPHUR DIOXIDE AND AN AQUEOUS SOLUTION OF A METALLIC CHLORATE, CONSISTING IN THE STEPS OF SUPPLYING A CONTINUOUS STREAM OF AN AQUEOUS SOLUTION OF A METALLIC CHLORATE TO A PACKED REACTION COLUMN AT SUCH A RATE AS TO DISTRIBUTE SAID AQUEOUS CHLORATE SOLUTION OVER THE SURFACES OF THE PACKING IN SAID REACTION COLUMN COCURRENTLY SUPPLYING A CONTINUOUS STREAM OF GASEOUS SULPHUR DIOXIDE AND AN INERT DILUENT GAS TO SAID REACTION COLUMN TO BRING SAID SULPHOR DIOXIDE INTO CONTACT WITH THE SURFACE OF THE AQUEOUS CHLORATE SOLUTION DISTRIBUTED OVER THE PACKING IN SAID COLUMN, EMPLOYING A HEAT EXCHANGE MEDIUM TO COOL SAID PACKED COLUMN IN THE ZONE OF GREATEST REACTION, AND CONTINUOUSLY WITHDRAWING FROM SAID REACTION COLUMN A GASEOUS MIXTURE CONTAINING CHLORINE DIOXIDE AND SAID INERT DILUENT GAS.
References Cited (Backward Citations)
US809086A
Cited
US1294546A
Cited
US1510790A
Cited
US2089913A
Cited
US2119721A
Cited
US2149574A
Cited
US2131447A
Cited
US2213798A
Cited
US2366309A
Cited
US2373830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-27 | 1955-11-26 | 1956-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-27 | 1959-11-26 | 1960-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-27 | 1963-11-26 | 1964-05-27 | $7700.00 | Window Closed / Lapsed |