US2689169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of hydrogen peroxide
Assignee: EIDP Inc
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Filing: 1949-11-05
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Granted: 1954-09-14
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Expires: 1969-11-05
Abstract
No abstract record available.
Inventors
- 👤 Wilbie S Hinegardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:28
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/01; C01B15/022; C01B15/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
IN A PRECESS FOR THE PRODUCTION OF HYDROGEN PEROXIDE WHEREIN AN ALKYLATED ANTHRAQUINONE INTERMEDIATE IS HYDROGENATED IN SOLUTION IN THE PRESENCE OF A CATALYST TO PRODUCE THE CORRESPONDING ANTHRAHYDROQUINONE AND THE LATTER IS OXIDIZED TO PRODUCE HYDROGEN PEROXIDE AND TO REGENERATE SAID ALKYLATED ANTHRAQUINONE WHICH IS RECYCLED, THE IMPROVEMENT COMPRISING EMPLOYNING 2TERTIARY-BUTYLANTHRAQUINONE AS SAID INTERMEDIATE.
Claim 2
Dependent Claim
55 words
IN A PRECESS FOR THE PRODUCTION OF HYDROGEN PEROXIDE WHEREIN AN ALKYLATED ANTHRAQUINONE INTERMEDIATE IS HYDROGENATED IN SOLUTION IN THE PRESENCE OF A CATALYST TO PRODUCE THE CORRESPONDING ANTHRAHYDROQUINONE AND THE LATTER IS OXIDIZED TO PRODUCE HYDROGEN PEROXIDE AND TO REGENERATE SAID ALKYLATED ANTHRAQUINONE WHICH IS RECYCLED, THE IMPROVEMENT COMPRISING EMPLOYNING 2TERTIARY-BUTYLANTHRAQUINONE AS SAID INTERMEDIATE.
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) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |