US2548803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic process
Assignee: EIDP Inc
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Filing: 1950-06-27
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Granted: 1951-04-10
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Expires: 1970-06-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Ernest L Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:44
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/72; B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/122; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/323; C07C2531/00; C07C2531/02; C07C2531/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A PROCESS FOR THE PREFERENTIAL ALKLYATION OF CYCLIC UNSATURATED HYDROCARBONS WHICH COMPRISES BRINGING INTO CONTACT IN A REACTION ZONE AND REACTING, AT A TEMPERATURE OF 0* TO 130* C. UNDER SUPERATMOSPHERIC PRESSURE OF 100 TO 3000 ATMOSPHERES IN THE PRESENCE OF AN ORGANO-ALKALI METAL CATALYTIC COMPOUND, A MONOOLEFINIC HYDROCARBON WITH A CYCLIC UNSATURATED HYDROCARBON WHEREIN THE UNSATURATION IS PRESENT SOLELY IN THE RING AND WHICH CONTAINS AT LEAST ONE HYDROGEN ATOM DIRECTLY ATTACHED TO A SATURATED CARBON ATOM WHICH IS SINGLY BONDED TO A RING CARBON ATOM WHICH IS IN TURN DOUBLY BONDED TO ONE OF ITS ADJACENT RING CARBON ATOMS.
Claim 2
Dependent Claim
101 words
A PROCESS FOR THE PREFERENTIAL ALKLYATION OF CYCLIC UNSATURATED HYDROCARBONS WHICH COMPRISES BRINGING INTO CONTACT IN A REACTION ZONE AND REACTING, AT A TEMPERATURE OF 0* TO 130* C. UNDER SUPERATMOSPHERIC PRESSURE OF 100 TO 3000 ATMOSPHERES IN THE PRESENCE OF AN ORGANO-ALKALI METAL CATALYTIC COMPOUND, A MONOOLEFINIC HYDROCARBON WITH A CYCLIC UNSATURATED HYDROCARBON WHEREIN THE UNSATURATION IS PRESENT SOLELY IN THE RING AND WHICH CONTAINS AT LEAST ONE HYDROGEN ATOM DIRECTLY ATTACHED TO A SATURATED CARBON ATOM WHICH IS SINGLY BONDED TO A RING CARBON ATOM WHICH IS IN TURN DOUBLY BONDED TO ONE OF ITS ADJACENT RING CARBON ATOMS.
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) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |