US2856423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid cobaltous toluate oxidation catalyst
Assignee: Richfield Oil Corp
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Filing: 1955-10-20
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Granted: 1958-10-14
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Expires: 1975-10-20
Abstract
No abstract record available.
Inventors
- 👤 Richard L Grantham
- 👤 Joseph E Nickels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:49
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/04; C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/255; C07C51/265; B01J2231/00; B01J2231/70; B01J2531/00; B01J2531/80; B01J2531/84; B01J2531/845; B01J2531/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN A PROCESS FOR THE PREPARATION OF TOLULIC ACIDS BY THE LIQUID PHASE OXIDATION OF THE CORRESPONDING XYLENES WITH AN OXYGEN-RICH GAS IN THE PRESENCE OF A COBALTOUS TOLUATE CATALYST THE IMPROVEMENT WHICH COMPRISES INTRODUCING SAID COBALTOUS TOLUATE CATALYST TO SAID XYLENES IN THE FORM OF A LIQUID CATALYST CONSISTING ESSENTIALLY OF A SOLUTION OF COBALTOUS TOLUATE AND TOLUIC ACID, THE MOLAR RATIO OF TOULIC ACID TO COBALTOUS TOLUATE IN SAID SOLUTION BEING ABOUT 1 TO 4:1.
Claim 2
Dependent Claim
77 words
IN A PROCESS FOR THE PREPARATION OF TOLULIC ACIDS BY THE LIQUID PHASE OXIDATION OF THE CORRESPONDING XYLENES WITH AN OXYGEN-RICH GAS IN THE PRESENCE OF A COBALTOUS TOLUATE CATALYST THE IMPROVEMENT WHICH COMPRISES INTRODUCING SAID COBALTOUS TOLUATE CATALYST TO SAID XYLENES IN THE FORM OF A LIQUID CATALYST CONSISTING ESSENTIALLY OF A SOLUTION OF COBALTOUS TOLUATE AND TOLUIC ACID, THE MOLAR RATIO OF TOULIC ACID TO COBALTOUS TOLUATE IN SAID SOLUTION BEING ABOUT 1 TO 4:1.
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) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |