US2914382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hydrogen peroxide
Assignee: Evonik LCL Ltd
•
Filing: 1954-05-20
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Granted: 1959-11-24
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Expires: 1974-05-20
Abstract
No abstract record available.
Inventors
- 👤 Holmes William Raymond
- 👤 Feuvre Charles William Le
- 👤 Wood William Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:55
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/01; C01B15/022; C01B15/023
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
A PROCESS FOR THE MANUFACTURE OF HYDROGEN PEROXIDE WHICH COMPRISES HYDROGENATING A SUBSTITUTED ANTHRAQUINONE SELECTED FORM THE GROUP CONSISTING OF ALKYLATED ANTHROQUINONES AND ACYLATED ANTHRAQUINONES IN AT LEAST ONE SOLVENT BY MEANS OF HYDROGEN IN THE PRESENCE OF A PALLADIUM CATALYST MATERIAL COMPRISING METALLIC PALLADIUM DEPOSITED ON AN AT LEAST PRTIALLY HYDRATED TITANIUM DIOXIDE WHICH HAS NOT BEEN HEATED TO A TEMPERATURE GREATER THAN 1000*C. TO FORM THE CORRESPONDING ANTHRAQUINHYRONE OR ANTHRAQUINOL, SEPARATING THE CATALYST AND OXIDISING SAID ANTHRAQUINHYRONE OR ANTHRAQUINOL IN THE PRESENCE OF WATER BY TREATMENT WITH AN OXIDISING GAS TO FORM HYROGEN PEROXIDE WITH REGENERATION OF THE SUBSTITUTED ANTHRAQUINONE.
References Cited (Backward Citations)
US1111502A
Cited
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Cited
US2657980A
Cited
US2668753A
Cited
US2662861A
Cited
US2739042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |