US2503050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing aldehydes by isomerization of olefin alpha oxides
Assignee: Wyandotte Chemicals Corp
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Filing: 1947-03-11
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Granted: 1950-04-04
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Expires: 1967-03-11
Abstract
No abstract record available.
Inventors
- 👤 Edward C Jacobs
- 👤 Lester G Lundsted
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:07
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; C; C07; C07C; C07C45/00; C07C45/56; C07C45/57; C07C45/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
THE PROCESS OF PRODUCING ALDEHYDES FROM OLEFIN ALPHA OXIDES WHICH COMPRISES HEATING SAID OXIDES IN CONTACT WITH A CHROMIC OXIDE GEL CATALYST COMPOSITION WHICH CONTAINS, IN ADDITION TO THE CHROMIC OXIDE, A PAIR OF COMPOUNDS SELECTED FROM THE GROUP OF PAIRS CONSISTING OF CADMIUM OXIDE-TUNGSTEN OXIDE AND TUNGSTEN OXIDE-IRON OXIDE; ALL OF SAID OXIDES BEING COPRECIPITATED FROM A COMMON AQUEOUS SOLUTION.
Claim 2
Dependent Claim
61 words
THE PROCESS OF PRODUCING ALDEHYDES FROM OLEFIN ALPHA OXIDES WHICH COMPRISES HEATING SAID OXIDES IN CONTACT WITH A CHROMIC OXIDE GEL CATALYST COMPOSITION WHICH CONTAINS, IN ADDITION TO THE CHROMIC OXIDE, A PAIR OF COMPOUNDS SELECTED FROM THE GROUP OF PAIRS CONSISTING OF CADMIUM OXIDE-TUNGSTEN OXIDE AND TUNGSTEN OXIDE-IRON OXIDE; ALL OF SAID OXIDES BEING COPRECIPITATED FROM A COMMON AQUEOUS SOLUTION.
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) | 1953-04-03 | 1953-10-03 | 1954-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-03 | 1957-10-03 | 1958-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-03 | 1961-10-03 | 1962-04-04 | $7700.00 | Window Closed / Lapsed |