Patent US2818441A successfully refreshed from Google Patents.
US2818441A
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US
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Process for effecting free radical reactions involving abstraction of hydrogen by vaporized hydrogen peroxide
Assignee: Shell Development Co
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Filing: 1954-09-13
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Granted: 1957-12-31
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Expires: 1974-09-13
Abstract
No abstract record available.
Inventors
- 👤 William E Vaughan
- 👤 Frederick F Rust
- 👤 Edward R Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:53
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/28; C07C2/00; C07C2/76; C07C2/82; C07C5/00; C07C5/42; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/942
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS WHICH COMPRISES HEATING A MIXTURE CONSISTING ESSENTIALLY OF VAPORIZED HYDROGEN PEROXIDE AND A MOLAR EXCESS OF AT LEASTA TWO-FOLD WITH RESPECT TO THE HYDROGEN PEROXIDE OF ORGANIC COMPOUND WHICH IS NOT DECOMPOSED TO CARBON BY HEAT AT A TAEMPERTURE IN THE RANGE OF 400*C. TO ABOUT 750*C. AND WHICH, WHEN TREATED WITH CHLORINE IN THE PRESENCE OF ACTINIC LIGHT, LIBERATES HYDROGEN CHLORIDE, AT A TEMPERATURE ABOVE 400*C. BUT BELOW ABOUT 750*C. FOR A PERIOD OF FROM 0.01 SECOND TO 60 SECONDS AND THEN RECOVERING THE PRODUCTS OF THE REACTION.
Claim 2
Dependent Claim
91 words
A PROCESS WHICH COMPRISES HEATING A MIXTURE CONSISTING ESSENTIALLY OF VAPORIZED HYDROGEN PEROXIDE AND A MOLAR EXCESS OF AT LEASTA TWO-FOLD WITH RESPECT TO THE HYDROGEN PEROXIDE OF ORGANIC COMPOUND WHICH IS NOT DECOMPOSED TO CARBON BY HEAT AT A TAEMPERTURE IN THE RANGE OF 400*C. TO ABOUT 750*C. AND WHICH, WHEN TREATED WITH CHLORINE IN THE PRESENCE OF ACTINIC LIGHT, LIBERATES HYDROGEN CHLORIDE, AT A TEMPERATURE ABOVE 400*C. BUT BELOW ABOUT 750*C. FOR A PERIOD OF FROM 0.01 SECOND TO 60 SECONDS AND THEN RECOVERING THE PRODUCTS OF THE REACTION.
References Cited (Backward Citations)
US2376257A
Cited
US2461988A
Cited
US2689253A
Cited
US2757192A
Cited
US2755322A
Cited
US2730559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |