US2681937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of alkylaromatic hydroperoxides
Assignee: Rhone Poulenc SA
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Filing: 1952-01-28
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Granted: 1954-06-22
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Expires: 1972-01-28
Abstract
No abstract record available.
Inventors
- 👤 Mosnier Michel Marius
- 👤 Fournet Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:00
CPC Classifications
A; A42; A42C; A42C1/00; A42C1/02; C; C07; C07C; C07C407/00; C07C409/00; C07C409/02; C07C409/04; C07C409/08; C07C409/10; C07C409/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
PROCESS FOR THE PRODUCTION OF ALKYL-AROMATIC HYDROPEROXIDES BY THE OXIDATION OF CUMENE AND HOMOLOGOUS ALKYL-AROMATIC HYDROCARBONS IN WHICH AT LEAST ONE ALKYL SUBSTITUENT GROUP IS A TERTIARY ALKYL GROUP AND CONTAINS MORE THAN ONE CARBON CHAIN, THE TERTIARY CARBON ATOM BEING ATTACHED DIRECTLY TO THE AROMATIC NUCLEUS, WHICH COMPRISES BRINGING THE SAID HYDROCARBON INTO CONTACT WITH OXYGEN AT ELEVATED TEMPERATURE IN THE PRESENCE OF A CATALYST SELECTED FROM THE CLASS CONSISTING OF THE FORMATES, OXALATES AND BENZOATES OF THE ALKALI METALS AND ALKALINE EARTH METALS.
Claim 2
Dependent Claim
85 words
PROCESS FOR THE PRODUCTION OF ALKYL-AROMATIC HYDROPEROXIDES BY THE OXIDATION OF CUMENE AND HOMOLOGOUS ALKYL-AROMATIC HYDROCARBONS IN WHICH AT LEAST ONE ALKYL SUBSTITUENT GROUP IS A TERTIARY ALKYL GROUP AND CONTAINS MORE THAN ONE CARBON CHAIN, THE TERTIARY CARBON ATOM BEING ATTACHED DIRECTLY TO THE AROMATIC NUCLEUS, WHICH COMPRISES BRINGING THE SAID HYDROCARBON INTO CONTACT WITH OXYGEN AT ELEVATED TEMPERATURE IN THE PRESENCE OF A CATALYST SELECTED FROM THE CLASS CONSISTING OF THE FORMATES, OXALATES AND BENZOATES OF THE ALKALI METALS AND ALKALINE EARTH METALS.
References Cited (Backward Citations)
US2547938A
Cited
US2548435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-21 | 1957-12-21 | 1958-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-21 | 1961-12-21 | 1962-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-21 | 1965-12-21 | 1966-06-22 | $7700.00 | Window Closed / Lapsed |