US3428690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation of cyclohexane
Assignee: Imperial Chemical Industries Ltd
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Filing: 1964-06-18
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Granted: 1969-02-18
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Expires: 1984-06-18
Abstract
No abstract record available.
Inventors
- 👤 Cyril Gardner
- 👤 John Fraser Prescott
- 👤 Randal George Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:07
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/02; C07C409/04; C07C407/00; C07C409/14; C09; C09B; C09B35/00; C09B35/02; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN A PROCESS FOR THE LIQUID PHASE OXIDATION OF CYCLOHEXANE WITH A GAS CONTAINING MOLECULAR OXYGEN IN FERROUS METAL CONTAINING APPARATUS WHEREIN THE REACTION PRODUCT COMPRISES A CYCLOHEXANE HYDROPEROXIDE, THE IMPROVEMENT COMPRISING OXIDISING SAID CYCLOHEXANE IN THE PRESENCE OF A MEMBER OF THE GROUP CONSISTING OF ETHYLENEDIAMINE TETRAACETIC ACID AND THE ALKALI METAL ALTS THEREOF, 8-HYDROXY QUINOLINE AND 1:2-DIAMINOCYCLOHEXANE TETRAACETIC ACID AND THE ALKALI METAL SALTS THEREOF.
Claim 2
Dependent Claim
67 words
IN A PROCESS FOR THE LIQUID PHASE OXIDATION OF CYCLOHEXANE WITH A GAS CONTAINING MOLECULAR OXYGEN IN FERROUS METAL CONTAINING APPARATUS WHEREIN THE REACTION PRODUCT COMPRISES A CYCLOHEXANE HYDROPEROXIDE, THE IMPROVEMENT COMPRISING OXIDISING SAID CYCLOHEXANE IN THE PRESENCE OF A MEMBER OF THE GROUP CONSISTING OF ETHYLENEDIAMINE TETRAACETIC ACID AND THE ALKALI METAL ALTS THEREOF, 8-HYDROXY QUINOLINE AND 1:2-DIAMINOCYCLOHEXANE TETRAACETIC ACID AND THE ALKALI METAL SALTS 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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |