US2895801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing chlorine dioxide
Assignee: Olin Corp
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Filing: 1956-04-06
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Granted: 1959-07-21
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Expires: 1976-04-06
Abstract
No abstract record available.
Inventors
- 👤 Walter W Northgraves
- 👤 Bernard H Nicolaisen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:19
CPC Classifications
C; C01; C01B; C01B11/00; C01B11/02; C01B11/022; C01B11/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN THE MANUFACTURE OF CHLORINE DIOXIDE BY REACTING AN ALKALI METAL CHLORATE AND A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF SULFUR DIOXIDE AND METHANOL IN AN AQUEOUS REACTION MIXTURE CONTAINING SULFURIC ACID, THE STEP OF INTRODUCING INTO THE REACTION MIXTURE FROM AN EXTERNAL SOURCE A MATERIAL SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND INORGANIC CHLORIDES, ADJUSTING THE RATES OF INTRODUCTION OF ALKALI METAL CHLORATE, REDUCING AGENT AND SAID MATERIAL INTO THE REACTION MIXTURE SO AS TO MAINTAIN THE REACTION MIXTURE 0.01 TO 0.5 MOLAR WITH RESPECT TO ALKALI METAL CHLORATE AND 0.05 TO 0.25 MOLAR WITH RESPECT TO CHLORIDE AND MAINTAINING THE REACTION MIXTURE FROM 1 TO 5.5 MOLAR WITH RESPECT TO SULFURIC ACID.
Claim 2
Dependent Claim
117 words
IN THE MANUFACTURE OF CHLORINE DIOXIDE BY REACTING AN ALKALI METAL CHLORATE AND A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF SULFUR DIOXIDE AND METHANOL IN AN AQUEOUS REACTION MIXTURE CONTAINING SULFURIC ACID, THE STEP OF INTRODUCING INTO THE REACTION MIXTURE FROM AN EXTERNAL SOURCE A MATERIAL SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND INORGANIC CHLORIDES, ADJUSTING THE RATES OF INTRODUCTION OF ALKALI METAL CHLORATE, REDUCING AGENT AND SAID MATERIAL INTO THE REACTION MIXTURE SO AS TO MAINTAIN THE REACTION MIXTURE 0.01 TO 0.5 MOLAR WITH RESPECT TO ALKALI METAL CHLORATE AND 0.05 TO 0.25 MOLAR WITH RESPECT TO CHLORIDE AND MAINTAINING THE REACTION MIXTURE FROM 1 TO 5.5 MOLAR WITH RESPECT TO SULFURIC ACID.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |