US2990427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for the oxidation of organic compounds
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1957-11-19
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Granted: 1961-06-27
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Expires: 1977-11-19
Abstract
No abstract record available.
Inventors
- 👤 Caldwell Alexander Muirhea Ure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:27
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/885; C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PROCESS FOR THE PARTIAL OXIDATION OF MONOOLEFINIC HYDROCARBONS, HAVING 4 CARBON ATOMS, TO PRODUCE FORMALDEHYDE, WHICH COMPRISES CONTACTING SAID OLEFINE IN THE VAPOR PHASE IN ADMIXTURE WITH A GAS CONTAINING FREE OXYGEN AND AT A TEMPERATURE IN THE RANGE OF 300*C. TO 600* C. WITH A CATALYST CONSISTING ESSENTIALLY OF A COMPOUND OBTAINED BY MELTING TOGETHER MOLYBDENIUM TRIOXIDE AND COPPER OXIDE (CUO) IN WHICH THE PROPORTIONS OF OXIDES USED IN PREPARING THE CATALYST ARE SUCH THAT MOLYBDENUM TRIOXIDE IS FROM 5 TO 80 MOLES PERCENT OF THE TOTAL.
Claim 2
Dependent Claim
89 words
A PROCESS FOR THE PARTIAL OXIDATION OF MONOOLEFINIC HYDROCARBONS, HAVING 4 CARBON ATOMS, TO PRODUCE FORMALDEHYDE, WHICH COMPRISES CONTACTING SAID OLEFINE IN THE VAPOR PHASE IN ADMIXTURE WITH A GAS CONTAINING FREE OXYGEN AND AT A TEMPERATURE IN THE RANGE OF 300*C. TO 600* C. WITH A CATALYST CONSISTING ESSENTIALLY OF A COMPOUND OBTAINED BY MELTING TOGETHER MOLYBDENIUM TRIOXIDE AND COPPER OXIDE (CUO) IN WHICH THE PROPORTIONS OF OXIDES USED IN PREPARING THE CATALYST ARE SUCH THAT MOLYBDENUM TRIOXIDE IS FROM 5 TO 80 MOLES PERCENT OF THE TOTAL.
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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) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |