US2673140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hydrogen peroxide
Assignee: EIDP Inc
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Filing: 1951-11-29
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Granted: 1954-03-23
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Expires: 1971-11-29
Abstract
No abstract record available.
Inventors
- 👤 Jerome W Sprauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:26
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/01; C01B15/022; C01B15/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN A CYCLIC PROCESS FOR PRODUCING HYDROGEN PEROXIDE BY ALTERNATELY CATALYTICALLY HYDROGENATING A SOLUTION COMPRISING 2-T-BUTYLANTHRAQUINONE DISSOLVED IN A SUITABLE SOLVENT AND OXYGENATING THE RESULTING SOLUTION TO REFORM SAID 2-T-BUTYLANTHRAQUINONE WHICH IS RECYCLED AFTER SEPARATING THE HYDROGEN PEROXIDE SIMULTANEOUSLY FORMED, THE IMPROVEMENT COMPRISING CARRYING OUT THE HYDROGENATION REACTION AT A GAS PHASE HYDROGEN PRESSURE NOT EXCEEDING 0.9 ATMOSPHERE WHILE RESTRICTING THE AMOUNT OF HYDROGEN ABSORBED TO NOT MORE THAN 70% OF THE AMOUNT THEORETICALLY REQUIRED TO COVERT ALL ANTHARAQUINONE COMPOUNDS PRESENT TO THE CORRESPONDING ANTHRAHYDROQUINONE COMPOUNDS.
Claim 2
Dependent Claim
86 words
IN A CYCLIC PROCESS FOR PRODUCING HYDROGEN PEROXIDE BY ALTERNATELY CATALYTICALLY HYDROGENATING A SOLUTION COMPRISING 2-T-BUTYLANTHRAQUINONE DISSOLVED IN A SUITABLE SOLVENT AND OXYGENATING THE RESULTING SOLUTION TO REFORM SAID 2-T-BUTYLANTHRAQUINONE WHICH IS RECYCLED AFTER SEPARATING THE HYDROGEN PEROXIDE SIMULTANEOUSLY FORMED, THE IMPROVEMENT COMPRISING CARRYING OUT THE HYDROGENATION REACTION AT A GAS PHASE HYDROGEN PRESSURE NOT EXCEEDING 0.9 ATMOSPHERE WHILE RESTRICTING THE AMOUNT OF HYDROGEN ABSORBED TO NOT MORE THAN 70% OF THE AMOUNT THEORETICALLY REQUIRED TO COVERT ALL ANTHARAQUINONE COMPOUNDS PRESENT TO THE CORRESPONDING ANTHRAHYDROQUINONE COMPOUNDS.
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) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |