US3073680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hydrogen peroxide
Assignee: FMC Corp
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Filing: 1961-03-20
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Granted: 1963-01-15
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Expires: 1981-03-20
Abstract
No abstract record available.
Inventors
- 👤 Theodore M Jenney
- 👤 Donald H Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:36
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/01; C01B15/022; C01B15/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
IN THE CONTINUOUS METHOD OF PRODUCING HYDROGEN PEROXIDE BY ALTERNATE REDUCTION AND OXIDATION OF A LIQUID WORKING SOLUTION CONTAINING AN ALKYLATED ANTHRAQUINONE WORKING COMPOUND, THE IMPROVEMENT WHICH COMPRISES EMPLOYING A TETRAHYDRO DERIVATIVE OF AN ALKYLATED ANTHRAQUINONE IN SAID WORKING COMPOUND IN AN AMOUNT GREATER THAN ABOUT 85% BY WEIGHT OF SAID TOTAL WORKING COMPOUND, PASSING SAID WORKING COMPOUND INTO A CATALYTIC HYDROGENATOR, HYDROGENATING SAID WORKING COMPOUND TO AT LEAST 55 TO 75% OF ITS TOTAL CAPACITY, PASSING SAID WORKING COMPOUND INTO AN OXIDIZING ZONE, CONTACTING SAID WORKING COMPOUND WITH AIR PASSED INTO THE SOLUTION FROM DIFFUSERS HAVING PORE DIAMETERS FROM ABOUT 0.006 TO 0.015 INCH AT A FLOW RATE OF FROM 2 TO 4 C.F.M./FT2 OF CROSS-SECTION OF THE OXIDIZING ZONE, SAID AIR AND WORKING COMPOUND HAVING A MINIMUM CONTACT TIME OF ABOUT 15 SECONDS, SEPARATING THE HYDROGEN PEROXIDE PRODUCED DURING THE OXIDATION STEP FROM SAID WORKING COMPOUND, RECYCLING THE WORKING COMPOUND FOR ADDITIONAL PROCESSING TO THE CATALYTIC HYDROGENATOR, AND RECOVERING THE HYDROGEN PEROXIDE SO PRODUCED.
Claim 2
Dependent Claim
166 words
IN THE CONTINUOUS METHOD OF PRODUCING HYDROGEN PEROXIDE BY ALTERNATE REDUCTION AND OXIDATION OF A LIQUID WORKING SOLUTION CONTAINING AN ALKYLATED ANTHRAQUINONE WORKING COMPOUND, THE IMPROVEMENT WHICH COMPRISES EMPLOYING A TETRAHYDRO DERIVATIVE OF AN ALKYLATED ANTHRAQUINONE IN SAID WORKING COMPOUND IN AN AMOUNT GREATER THAN ABOUT 85% BY WEIGHT OF SAID TOTAL WORKING COMPOUND, PASSING SAID WORKING COMPOUND INTO A CATALYTIC HYDROGENATOR, HYDROGENATING SAID WORKING COMPOUND TO AT LEAST 55 TO 75% OF ITS TOTAL CAPACITY, PASSING SAID WORKING COMPOUND INTO AN OXIDIZING ZONE, CONTACTING SAID WORKING COMPOUND WITH AIR PASSED INTO THE SOLUTION FROM DIFFUSERS HAVING PORE DIAMETERS FROM ABOUT 0.006 TO 0.015 INCH AT A FLOW RATE OF FROM 2 TO 4 C.F.M./FT2 OF CROSS-SECTION OF THE OXIDIZING ZONE, SAID AIR AND WORKING COMPOUND HAVING A MINIMUM CONTACT TIME OF ABOUT 15 SECONDS, SEPARATING THE HYDROGEN PEROXIDE PRODUCED DURING THE OXIDATION STEP FROM SAID WORKING COMPOUND, RECYCLING THE WORKING COMPOUND FOR ADDITIONAL PROCESSING TO THE CATALYTIC HYDROGENATOR, AND RECOVERING THE HYDROGEN PEROXIDE SO PRODUCED.
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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |