Patent US2765215A successfully refreshed from Google Patents.
US2765215A
Expired / Lapsed
US
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Method of making chlorine dioxide
Assignee: Columbia Southern Chemical Corp
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Filing: 1950-10-12
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Granted: 1956-10-02
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Expires: 1970-10-12
Abstract
No abstract record available.
Inventors
- 👤 Pechukas Alphonse
- 👤 Carlson Gordon Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:17
CPC Classifications
C; C01; C01B; C01B11/00; C01B11/02; C01B11/022; C01B11/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
THE PROCESS OF PREPARING CHLORINE DIOXIDE WHICH COMPRISES FORMING AN AQUEOUS ACID SOLUTION CONTAINING A WATER SOLUBLE TRIVALENT CHROMIUM COMPOUND AND A CHLORATE DISSOLVED THEREIN, THE TRIVALENT CHROMIUM THEREIN BEING 20 TO 120 PERCENT IN EXCESS OF 1 MOLE PER 3 MOLES OF CHLORATE, INTRODUCING SAID SOLUTION INTO THE UPPER PORTION OF A GAS-LIQUID CONTACT COLUMN, INTRODUCING A HOT INERT GASEOUS DILUENT INTO THE BOTTOM OF A COLUMN AT A RATE SUFFICIENT TO HEAT THE SOLUTION TO A TEMPERATURE ABOVE 60*C. WHEREBY TO CAUSE EVOLUTION OF CHLORINE DIOXIDE AND TO PRODUCE A MIXTURE OF CHLORINE DIOXIDE AND SAID DILUENT, IN WHICH THE DILUENT CONCENTRATION IS SUFFICIENTLY HIGH TO PREVENT EXPLOSION OF THE MIXTURE, REMOVING THE MIXTURE OF THE DILUENT AND THE CHLORINE
Claim 2
Dependent Claim
122 words
THE PROCESS OF PREPARING CHLORINE DIOXIDE WHICH COMPRISES FORMING AN AQUEOUS ACID SOLUTION CONTAINING A WATER SOLUBLE TRIVALENT CHROMIUM COMPOUND AND A CHLORATE DISSOLVED THEREIN, THE TRIVALENT CHROMIUM THEREIN BEING 20 TO 120 PERCENT IN EXCESS OF 1 MOLE PER 3 MOLES OF CHLORATE, INTRODUCING SAID SOLUTION INTO THE UPPER PORTION OF A GAS-LIQUID CONTACT COLUMN, INTRODUCING A HOT INERT GASEOUS DILUENT INTO THE BOTTOM OF A COLUMN AT A RATE SUFFICIENT TO HEAT THE SOLUTION TO A TEMPERATURE ABOVE 60*C. WHEREBY TO CAUSE EVOLUTION OF CHLORINE DIOXIDE AND TO PRODUCE A MIXTURE OF CHLORINE DIOXIDE AND SAID DILUENT, IN WHICH THE DILUENT CONCENTRATION IS SUFFICIENTLY HIGH TO PREVENT EXPLOSION OF THE MIXTURE, REMOVING THE MIXTURE OF THE DILUENT AND THE CHLORINE
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) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |