US2589648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cycloalkane oxidation
Assignee: Pan American Refining Corp
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Filing: 1950-05-26
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Granted: 1952-03-18
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Expires: 1970-05-26
Abstract
No abstract record available.
Inventors
- 👤 Francis T Wadsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:16
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/04; C; C07; C07C; C07C51/00; C07C51/16; C07C51/31; C07C51/316; B01J2231/00; B01J2231/70; B01J2531/00; B01J2531/70; B01J2531/72; B01J2531/80; B01J2531/84; B01J2531/845
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN A PROCESS FOR THE LIQUID-PHASE OXIDATION OF A LIQUID CYCLOALKANE CONTAINING 4 TO 6 CARBON ATOMS, INCLUSIVE, IN THE RING TO PRODUCE AN ALKANE DICARBOXYLIC ACID IN THE PRESENCE OF A POLYVALENT HEAVY METAL CATALYST AND CYCLOHEXANONE REACTION INITIATOR, THE IMPROVEMENT WHICH COMPRISES EFFECTING SAID OXIDATION IN A SOLUTION OF SAID CYCLOALKANE IN A SOLVENT CONSISTING ESSENTIALLY OF ACETONE, THE PROPORTION OF ACETONE IN SAID SOLUTION BEING BETWEEN ABOUT 10 AND 70 PERCENT BY WEIGHT.
Claim 2
Dependent Claim
76 words
IN A PROCESS FOR THE LIQUID-PHASE OXIDATION OF A LIQUID CYCLOALKANE CONTAINING 4 TO 6 CARBON ATOMS, INCLUSIVE, IN THE RING TO PRODUCE AN ALKANE DICARBOXYLIC ACID IN THE PRESENCE OF A POLYVALENT HEAVY METAL CATALYST AND CYCLOHEXANONE REACTION INITIATOR, THE IMPROVEMENT WHICH COMPRISES EFFECTING SAID OXIDATION IN A SOLUTION OF SAID CYCLOALKANE IN A SOLVENT CONSISTING ESSENTIALLY OF ACETONE, THE PROPORTION OF ACETONE IN SAID SOLUTION BEING BETWEEN ABOUT 10 AND 70 PERCENT BY WEIGHT.
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) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |