US2841603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid phase oxidation of paraffinic hydrocarbon mixtures
Assignee: Tidewater Oil Co
•
Filing: 1955-03-08
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Granted: 1958-07-01
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Expires: 1975-03-08
Abstract
No abstract record available.
Inventors
- 👤 Carl N Zellner
- 👤 Lister Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:28
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/215; C07C51/225
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN THE LIQUID PHASE OXIDATION OF RELATIVELY HIGH MOLECULAR WEIGHT PREDOMINANTLY PARAFFINIC HYDROCARBON MIXTURES WITH OXYGEN OF A FREE-OXYGEN CONTAINING GAS, THE IMPROVEMENT WHEREIN THE OXIDATION REACTION IS CARRIED OUT IN THE PRESENCE OF AN OXIDATION CATALYST CONSISTING ESSENTIALLY OF A COMBINATION OF MANGANESE AND A GROUP IVB METAL IN RATIO OF ONE GRAM ATOM OF MANGANESE TO FROM ABOUT 0.1 TO ABOUT 2.5 GRAM ATOMS OF THE GROUP IVB METAL.
Claim 2
Dependent Claim
71 words
IN THE LIQUID PHASE OXIDATION OF RELATIVELY HIGH MOLECULAR WEIGHT PREDOMINANTLY PARAFFINIC HYDROCARBON MIXTURES WITH OXYGEN OF A FREE-OXYGEN CONTAINING GAS, THE IMPROVEMENT WHEREIN THE OXIDATION REACTION IS CARRIED OUT IN THE PRESENCE OF AN OXIDATION CATALYST CONSISTING ESSENTIALLY OF A COMBINATION OF MANGANESE AND A GROUP IVB METAL IN RATIO OF ONE GRAM ATOM OF MANGANESE TO FROM ABOUT 0.1 TO ABOUT 2.5 GRAM ATOMS OF THE GROUP IVB METAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |