US2736636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chlorine dioxide production
Assignee: Brown Co
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Filing: 1951-06-20
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Granted: 1956-02-28
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Expires: 1971-06-20
Abstract
No abstract record available.
Inventors
- 👤 George A Day
- 👤 Edward F Fenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:27
CPC Classifications
C; C01; C01B; C01B11/00; C01B11/02; C01B11/022; C01B11/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD FOR HIGH EFFICIENCY PRODUCTION OF CHLORINE DIOXIDE WITH AT LEAST 89% PURITY BY WEIGHT WHICH COMPRISES REACTING IN AQUEOUS SOLUTION A CHORATE, SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM, CALCIUM AND MAGNESIUM CHLORATES, WITH AN EXCESS OF AT LEAST 60% ABOVE THE THEORETICAL STOICHIOMETRIC PROPORTION OF A NONGASEOUS ORGANIC REDUCING AGENT IN THE PRESENCE OF SULPHURIC ACID IN MOLAR RATIO TO THE CHLORATE BETWEEN 1:1 AND 3:1 AND IN A MAINTAINED CONCENTRATION ABOVE ABOUT 3 N BUT NOT IN EXCESS OF 15 N, UNTIL SUBSTANTIALLY ALL THE CHLORATE IS DECOMPOSED.
Claim 2
Independent Claim
93 words
A METHOD FOR HIGH EFFICIENCY PRODUCTION OF CHLORINE DIOXIDE WITH AT LEAST 89% PURITY BY WEIGHT WHICH COMPRISES REACTING IN AQUEOUS SOLUTION A CHORATE, SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM, CALCIUM AND MAGNESIUM CHLORATES, WITH AN EXCESS OF AT LEAST 60% ABOVE THE THEORETICAL STOICHIOMETRIC PROPORTION OF A NONGASEOUS ORGANIC REDUCING AGENT IN THE PRESENCE OF SULPHURIC ACID IN MOLAR RATIO TO THE CHLORATE BETWEEN 1:1 AND 3:1 AND IN A MAINTAINED CONCENTRATION ABOVE ABOUT 3 N BUT NOT IN EXCESS OF 15 N, UNTIL SUBSTANTIALLY ALL THE CHLORATE IS DECOMPOSED.
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) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |