Patent US2759984A successfully refreshed from Google Patents.
US2759984A
Expired / Lapsed
US
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Production of alkyl aromatic compounds
Assignee: California Research LLC
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Filing: 1950-12-18
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Granted: 1956-08-21
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Expires: 1970-12-18
Abstract
No abstract record available.
Inventors
- 👤 Maurice J Schlatter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:09
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/08; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/942
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE METHOD OF PRODUCING SUBSTITUTED BENZENES BY REPLACING THE TERTIARY-BUTYL GROUP OF A TERTIARY BUTYLBENZENE WITH ANOTHER SATURATED ALIPHATIC SUBSTITUENT WHICH COMPRISES INTIMATELY CONTACTING A TERTIARY BUTYLBENZENE WITH A HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF ISOPARAFFINS OTHER THAN ISOBUTANE AND CYCLOPARAFFINS CONTAINING AT LEAST ONE TERTIARY-CARBON ATOM IN THE PRESENCE OF A LIQUID ACID ALKYLATION UNDER ALKYLATING CONDITIONS AND RECOVERING FROM THE REACTION PRODUCT MIXTURE ISOBUTANE AND A SUBSTANTIAL FRACTION IN BENZENE ALKYLATED WITH SELECTED MATERIAL.
Claim 2
Independent Claim
77 words
THE METHOD OF PRODUCING SUBSTITUTED BENZENES BY REPLACING THE TERTIARY-BUTYL GROUP OF A TERTIARY BUTYLBENZENE WITH ANOTHER SATURATED ALIPHATIC SUBSTITUENT WHICH COMPRISES INTIMATELY CONTACTING A TERTIARY BUTYLBENZENE WITH A HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF ISOPARAFFINS OTHER THAN ISOBUTANE AND CYCLOPARAFFINS CONTAINING AT LEAST ONE TERTIARY-CARBON ATOM IN THE PRESENCE OF A LIQUID ACID ALKYLATION UNDER ALKYLATING CONDITIONS AND RECOVERING FROM THE REACTION PRODUCT MIXTURE ISOBUTANE AND A SUBSTANTIAL FRACTION IN BENZENE ALKYLATED WITH SELECTED MATERIAL.
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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) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |