US2995424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen peroxide via tetrahydroanthraquinone
Assignee: Honeywell International Inc
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Filing: 1958-10-06
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Granted: 1961-08-08
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Expires: 1978-10-06
Abstract
No abstract record available.
Inventors
- 👤 James K Farrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:53
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/01; C01B15/022; C01B15/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A CYCLIC PROCESS FOR THE PRODUCTION OF HYDROGEN PEROXIDE INVOLVING HYDROGENATING A WORKING SOLUTION COMPRISING A TETRAHYDROANTHRAQUINONE COMPOUND DISSOLVED IN A WATER-IMMISCIBLE SOLVENT TO CONVERT THE TETRAHYDROANTHRAQUINONE COMPOUND TO THE CORRESPONDING TETRAHYDROANTHRAHYDROQUINONE COMPOUND, OXIDIZING THE HYDROGENATED WORKING SOLUTION WITH ELEMENTAL OXYGEN TO PRODUCE THE TETRAHYDROANTHRAQUINONE COMPOUND AND HYDROGEN PEROXIDE, AND SEPARATING HYDROGEN PEROXIDE FROM THE OXIDIZED WORKING SOLUTION, AND RECYCLING THE OXIDIZED WORKING SOLUTION FOR FURTHER HYDROGENATION THE IMPROVEMENT WHICH COMPRISES EFFECTING OXIDATION OF THE WORKING SOLUTION IN THE PRESENCE OF A SMALL AMOUNT, WITHIN THE RANGE OF ABOUT 0.002% TO ABOUT 0.25%, BY WEIGHT OF A WATER SOLUBLE IONIZABLE INORGANIC ALKALINE COMPOUND.
Claim 2
Dependent Claim
104 words
IN A CYCLIC PROCESS FOR THE PRODUCTION OF HYDROGEN PEROXIDE INVOLVING HYDROGENATING A WORKING SOLUTION COMPRISING A TETRAHYDROANTHRAQUINONE COMPOUND DISSOLVED IN A WATER-IMMISCIBLE SOLVENT TO CONVERT THE TETRAHYDROANTHRAQUINONE COMPOUND TO THE CORRESPONDING TETRAHYDROANTHRAHYDROQUINONE COMPOUND, OXIDIZING THE HYDROGENATED WORKING SOLUTION WITH ELEMENTAL OXYGEN TO PRODUCE THE TETRAHYDROANTHRAQUINONE COMPOUND AND HYDROGEN PEROXIDE, AND SEPARATING HYDROGEN PEROXIDE FROM THE OXIDIZED WORKING SOLUTION, AND RECYCLING THE OXIDIZED WORKING SOLUTION FOR FURTHER HYDROGENATION THE IMPROVEMENT WHICH COMPRISES EFFECTING OXIDATION OF THE WORKING SOLUTION IN THE PRESENCE OF A SMALL AMOUNT, WITHIN THE RANGE OF ABOUT 0.002% TO ABOUT 0.25%, BY WEIGHT OF A WATER SOLUBLE IONIZABLE INORGANIC ALKALINE COMPOUND.
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) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |