US2668753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hydrogen peroxide
Assignee: EIDP Inc
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Filing: 1949-11-05
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Granted: 1954-02-09
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Expires: 1969-11-05
Abstract
No abstract record available.
Inventors
- 👤 Charles R Harris
- 👤 Jerome W Sprauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:39
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/01; C01B15/022; C01B15/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN A CYCLIC PROCESS FOR THE PRODUCTION OF HYDROGEN PEROXIDE WHEREIN A SUBSTANCE FROM THE GROUP CONSISTING OF ALKYLATED ANTHRAQUINONES, TETRAHYDRO ALKYLATED ANTHRAQUINONES AND MIXTURES THEREOF, IS HYDROGENATED TO FORM A SUBSTANCE FROM THE GROUP CONSISTING OF ALKYLATED ANTHRAHYDROQUINONES, TETRAHYDRO ALKYLATED ANTHRAHYDROQUINONES AND MIXTURES THEREOF, WHICH IS OXIDIZED TO PRODUCE HYDROGEN PEROXIDE AND TO REGENERATE SAID FIRST NAMED SUBSTANCE FOR RECYCLING THE PROCESS, THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS SOLVENT IN BOTH THE REDUCTION AND OXIDATION STEPS OF SAID PROCESS A MIXTURE COMPRISING A SUBSTANCE FROM THE GROUP CONSISTING OF THE PRIMARY AND SECONDARY NONYL ALCOHOLS AND MIXTURES THEREOF, AND A SUBSTANCE FROM THE GROUP CONSISTING OF THE MONOMETHYL- AND DIMETHYLSUBSTITUTED NAPHTHALENES AND MIXTURES THEREOF.
Claim 2
Dependent Claim
115 words
IN A CYCLIC PROCESS FOR THE PRODUCTION OF HYDROGEN PEROXIDE WHEREIN A SUBSTANCE FROM THE GROUP CONSISTING OF ALKYLATED ANTHRAQUINONES, TETRAHYDRO ALKYLATED ANTHRAQUINONES AND MIXTURES THEREOF, IS HYDROGENATED TO FORM A SUBSTANCE FROM THE GROUP CONSISTING OF ALKYLATED ANTHRAHYDROQUINONES, TETRAHYDRO ALKYLATED ANTHRAHYDROQUINONES AND MIXTURES THEREOF, WHICH IS OXIDIZED TO PRODUCE HYDROGEN PEROXIDE AND TO REGENERATE SAID FIRST NAMED SUBSTANCE FOR RECYCLING THE PROCESS, THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS SOLVENT IN BOTH THE REDUCTION AND OXIDATION STEPS OF SAID PROCESS A MIXTURE COMPRISING A SUBSTANCE FROM THE GROUP CONSISTING OF THE PRIMARY AND SECONDARY NONYL ALCOHOLS AND MIXTURES THEREOF, AND A SUBSTANCE FROM THE GROUP CONSISTING OF THE MONOMETHYL- AND DIMETHYLSUBSTITUTED NAPHTHALENES AND MIXTURES THEREOF.
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) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |