Patent US3114634A successfully refreshed from Google Patents.
Patent US2733270A successfully refreshed from Google Patents.
US2733270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of aldehydes
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
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Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:10
CPC Classifications
C; C07; C07C; C07C47/00; C07C47/02; C07C47/12; C07C45/00; C07C45/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE PROCESS FOR PREPARING ADIPASLDEHYDE WHICH COMPRISES HYDROGENATING IN SOLUTION IN A LOWER BOILING SATURATED ALIPHATIC MONOHYDRIC ALCOHOL AT A TEMPERATURE CONTROLLED TO BE BELOW +15* C., USING A HYDROGEN PRESSURE OF AT LEAST 10 POUNDS PER SQUARE INCH AND IN THE PRESENCE OF A PLATINUM GROUP HYDROGENATION CATALYST, THE REACTION PRODUCT PRODUCED BY OZINATION AT A TEMPERATURE BETWEEN -80* C. AND +40* C. OF CYCLOHEXENE DISSOLVED IN A LOWER BOILING ALIPHATIC MONOHYDRIC ALCOHOL, AND ISOLATING THE ADIPALDEHYDE RESULTING FROM THE HYDROGENATION.
Claim 2
Dependent Claim
82 words
THE PROCESS FOR PREPARING ADIPASLDEHYDE WHICH COMPRISES HYDROGENATING IN SOLUTION IN A LOWER BOILING SATURATED ALIPHATIC MONOHYDRIC ALCOHOL AT A TEMPERATURE CONTROLLED TO BE BELOW +15* C., USING A HYDROGEN PRESSURE OF AT LEAST 10 POUNDS PER SQUARE INCH AND IN THE PRESENCE OF A PLATINUM GROUP HYDROGENATION CATALYST, THE REACTION PRODUCT PRODUCED BY OZINATION AT A TEMPERATURE BETWEEN -80* C. AND +40* C. OF CYCLOHEXENE DISSOLVED IN A LOWER BOILING ALIPHATIC MONOHYDRIC ALCOHOL, AND ISOLATING THE ADIPALDEHYDE RESULTING FROM THE HYDROGENATION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |