Patent US3274254A successfully refreshed from Google Patents.
US3274254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation of cyclohexane
Assignee: —
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Filing: —
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Granted: 1966-09-20
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Expires: 1983-09-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:42
CPC Classifications
C; C07; C07C; C07C35/00; C07C35/02; C07C35/08; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C29/00; C07C29/48; C07C29/50; C07C49/00; C07C49/385; C07C49/403; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A PROCESS FOR THE MANUFACTURE OF CYCLOHEXANOL AND CYCLOHEXANONE BY OXIDISING LIQUID CYCLOHEXANE WITH GASEOUS OXYGENINA REACTION ZONE INTO WHICH LIQUID CYCLO HEXANE AND AN OXYGEN-CONTAINING GAS ARE SEPARATELY INTRODUCED AND FROM WHICH ISSURES A MIXTURE OF HOT RESIDUAL GASES AND UNREACTED CYCLOHEXANE VAPOR, CONDENSING THE UNREACTED CYCLOHEXANE VAPOR IN THE RESIDUAL GASES LEAVING THE REACTION ZONE, AND RETURNING THE SAID UNREACTED CYCLOHEXANE TO THE REACTION ZONE, WHEREIN LIQUID CYCLOHEXANE IS INTRODUCED INTO SAID OXYGEN-CONTAINING GAS BEFORE SAID OXYGEN-CONTAINING GAS IS SUPPLIED TO SAID REACION ZONE AND WHEREIN SAID MIXTURE OF HOT RESIDUAL GASES AND UNREACTED CYCLOHEXANE VAPOR IS SUBJECTED TO INDIRECT HEAT EXCHANGE WITH THE MIXTURE OF OXYGEN-CONTAINING GAS AND CYCLOHEXANE BEING SUPPLIED TO THE REACTION ZONE, AND BY THE SAID HEAT EXCHANGE AT LEAST A PART OF THE CYCLOHEXANE VAPOR TO BE CONDENSED IS CONDENSED AND LIQUID CYCLOHEXANE IS VAPORIZED IN THE OXYGEN-CONTAINING GAS.
Claim 2
Dependent Claim
146 words
A PROCESS FOR THE MANUFACTURE OF CYCLOHEXANOL AND CYCLOHEXANONE BY OXIDISING LIQUID CYCLOHEXANE WITH GASEOUS OXYGENINA REACTION ZONE INTO WHICH LIQUID CYCLO HEXANE AND AN OXYGEN-CONTAINING GAS ARE SEPARATELY INTRODUCED AND FROM WHICH ISSURES A MIXTURE OF HOT RESIDUAL GASES AND UNREACTED CYCLOHEXANE VAPOR, CONDENSING THE UNREACTED CYCLOHEXANE VAPOR IN THE RESIDUAL GASES LEAVING THE REACTION ZONE, AND RETURNING THE SAID UNREACTED CYCLOHEXANE TO THE REACTION ZONE, WHEREIN LIQUID CYCLOHEXANE IS INTRODUCED INTO SAID OXYGEN-CONTAINING GAS BEFORE SAID OXYGEN-CONTAINING GAS IS SUPPLIED TO SAID REACION ZONE AND WHEREIN SAID MIXTURE OF HOT RESIDUAL GASES AND UNREACTED CYCLOHEXANE VAPOR IS SUBJECTED TO INDIRECT HEAT EXCHANGE WITH THE MIXTURE OF OXYGEN-CONTAINING GAS AND CYCLOHEXANE BEING SUPPLIED TO THE REACTION ZONE, AND BY THE SAID HEAT EXCHANGE AT LEAST A PART OF THE CYCLOHEXANE VAPOR TO BE CONDENSED IS CONDENSED AND LIQUID CYCLOHEXANE IS VAPORIZED IN THE OXYGEN-CONTAINING GAS.
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |