US3104263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of acetaldehyde
Assignee: Hoechst AG
•
Filing: 1958-10-06
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Granted: 1963-09-17
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Expires: 1978-10-06
Abstract
No abstract record available.
Inventors
- 👤 Riemenschneider Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:02
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A PROCESS FOR THE MANUFACTURE OF ACETALDEHYDE WHICH COMPRISES CONTACTING ETHYLENE WITH MOLECULAR OXYGEN AT A TEMPERATURE ABOVE ROOM TEMPERATURE AND UP TO ABOUT 250*C. AND UNDER SUPERATMOSPHERIC PRESSURE UP TO ABOUT 450 ATMOSPHERES GAUGE AT A PH BETWEEN 0 AND 7 IN THE PRESENCE OF WATER AND OF AN INORGANIC REDOX SYSTEM CONSISTINGG ESSENTIALLY OF AT LEAST ONE WATER-SOLUBLE SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, IRON, COBALT, NICKEL, MANGANESE, MERCURY, CERIUM, TITANIUM, URANIUM, BISMUTH, TANTALUM, TIN, LEAD, CHROMIUM, MOLYBDENUM, VANADIUM, AND ANTIMONY.
Claim 2
Dependent Claim
88 words
A PROCESS FOR THE MANUFACTURE OF ACETALDEHYDE WHICH COMPRISES CONTACTING ETHYLENE WITH MOLECULAR OXYGEN AT A TEMPERATURE ABOVE ROOM TEMPERATURE AND UP TO ABOUT 250*C. AND UNDER SUPERATMOSPHERIC PRESSURE UP TO ABOUT 450 ATMOSPHERES GAUGE AT A PH BETWEEN 0 AND 7 IN THE PRESENCE OF WATER AND OF AN INORGANIC REDOX SYSTEM CONSISTINGG ESSENTIALLY OF AT LEAST ONE WATER-SOLUBLE SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, IRON, COBALT, NICKEL, MANGANESE, MERCURY, CERIUM, TITANIUM, URANIUM, BISMUTH, TANTALUM, TIN, LEAD, CHROMIUM, MOLYBDENUM, VANADIUM, AND ANTIMONY.
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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) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |