US2641528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of chlorine dioxide of low chlorine content
Assignee: Mathieson Chemical Corp
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Filing: 1949-07-27
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Granted: 1953-06-09
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Expires: 1969-07-27
Abstract
No abstract record available.
Inventors
- 👤 Audoynaud Max Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:25
CPC Classifications
C; C01; C01B; C01B11/00; C01B11/02; C01B11/022; C01B11/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A PROCESS OF PRODUCING CHLORIDE DIOXIDE WHICH COMPRISES PASSING A CURRENT OF FINELY DIVIDED INERT GAS INTO A SOLUTION WARMED TO ABOUT 55* TO 60* C. AND CONSISTING ESSENTIALLY OF A METALLIC CHLORATE IN A CONCENTRATED MINERAL ACID SELECTED FROM THE GROUP CONSISTING OF SULFURIC AND PHOSPHORIC ACIDS, AND RECOVERING THE RESULTING CHLORINE DIOXIDE WHICH HAS BEEN RELEASED AND REMOVED FROM THE SOLUTION BY THE ACTION OF THE CURRENT OF FINELY DIVIDED INERT GAS.
Claim 2
Dependent Claim
74 words
A PROCESS OF PRODUCING CHLORIDE DIOXIDE WHICH COMPRISES PASSING A CURRENT OF FINELY DIVIDED INERT GAS INTO A SOLUTION WARMED TO ABOUT 55* TO 60* C. AND CONSISTING ESSENTIALLY OF A METALLIC CHLORATE IN A CONCENTRATED MINERAL ACID SELECTED FROM THE GROUP CONSISTING OF SULFURIC AND PHOSPHORIC ACIDS, AND RECOVERING THE RESULTING CHLORINE DIOXIDE WHICH HAS BEEN RELEASED AND REMOVED FROM THE SOLUTION BY THE ACTION OF THE CURRENT OF FINELY DIVIDED INERT GAS.
References Cited (Backward Citations)
US2000222A
Cited
US2280938A
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US2317443A
Cited
US2332181A
Cited
GB575173A
Cited
US2481240A
Cited
US2510034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |