US2769850A
Expired / Lapsed
US
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Alkylation reactions
Assignee: Ethyl Corp
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Filing: 1952-03-21
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Granted: 1956-11-06
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Expires: 1972-03-21
Abstract
No abstract record available.
Inventors
- 👤 Rex D Closson
- 👤 Alfred J Kolka
- 👤 Waldo B Ligett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:38
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/72; C07C2531/00; C07C2531/02; C07C2531/12; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
IN A PROCESS FOR THE ALKYLATION WITH A NON-CONJUGATED OLEFINOF A CARBOCYCLIC COMPOUND CONTAINING A SATURATED HYDROGEN-CONTAINING CARBON ATOM ADJACENT TO AN UNSATURATED NUCLEAR CARBON ATOM, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID REACTION AT A TEMPERATRUE OF 200-375* C. AND AT A PRESSURE OF 20-3000 ATMOSPHERES IN THE PRESENCE OF AN ALKALI METAL HYDRIDE CATALYST.
Claim 2
Dependent Claim
55 words
IN A PROCESS FOR THE ALKYLATION WITH A NON-CONJUGATED OLEFINOF A CARBOCYCLIC COMPOUND CONTAINING A SATURATED HYDROGEN-CONTAINING CARBON ATOM ADJACENT TO AN UNSATURATED NUCLEAR CARBON ATOM, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID REACTION AT A TEMPERATRUE OF 200-375* C. AND AT A PRESSURE OF 20-3000 ATMOSPHERES IN THE PRESENCE OF AN ALKALI METAL HYDRIDE CATALYST.
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) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |