US2867507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation of alkylanthraquinones
Assignee: EIDP Inc
•
Filing: 1958-05-08
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Granted: 1959-01-06
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Expires: 1978-05-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Willard S Gleason
- 👤 Jerome W Sprauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:05
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/01; C01B15/022; C01B15/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
IN A PROCESS FOR PRODUCING HYDROGEN PEROXIDE INVOLVING ALTERNATELY HYDROGENATING AN ALKYLANTHRAQUINONE AND OXYGENATING THE RESULTING ALKYLANTHRAHYDROQUINONE TO REGENERATE SAID ALKYLANTHRAQUINONE AND SIMULTANEOUSLY PRODUCE HYDROGEN PEROXIDE, THE IMPROVEMENT COMPRISING EFFECTING SAID HYDROGENATION IN THE PRESENCE OF A CATALYST COMPRISING METALLIC PALLADIUM ON AN ACTIVATED ALUMINA SUPPORT WHILE MAINTAINING THE WATER CONTENT OF
Claim 2
Dependent Claim
52 words
IN A PROCESS FOR PRODUCING HYDROGEN PEROXIDE INVOLVING ALTERNATELY HYDROGENATING AN ALKYLANTHRAQUINONE AND OXYGENATING THE RESULTING ALKYLANTHRAHYDROQUINONE TO REGENERATE SAID ALKYLANTHRAQUINONE AND SIMULTANEOUSLY PRODUCE HYDROGEN PEROXIDE, THE IMPROVEMENT COMPRISING EFFECTING SAID HYDROGENATION IN THE PRESENCE OF A CATALYST COMPRISING METALLIC PALLADIUM ON AN ACTIVATED ALUMINA SUPPORT WHILE MAINTAINING THE WATER CONTENT OF
References Cited (Backward Citations)
US2369912A
Cited
US2657980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |