Patent US2644017A successfully refreshed from Google Patents.
US2644017A
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Disproportionation of diethylbenzene
Assignee: Standard Oil Co
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Filing: 1951-06-29
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Granted: 1953-06-30
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Expires: 1971-06-29
Abstract
No abstract record available.
Inventors
- 👤 David A Mccaulay
- 👤 Arthur P Lien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:23
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/08; C07C6/12; C07C6/123; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/901; Y10S585/902; Y10S585/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A PROCESS FOR THE DISPROPORTIONATION OF DIETHYLBENZENE WHICH PROCESS COMPRISES THE STEPS OF CONTACTING UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS A FEED COMPRISING ESSENTIALLY DIETHYLBENZENE IN THE ABSENCE OF OTHER AROMATIC HYDROCARBON WITH AT LEAST 1 MOL OF BF3 PER MOL OF DIETHYLBENZENE AND SUFFICIENT LIQUID HF TO DISSOLVE ALL OF THE BF3-DIETHYLBENZENE COMPLEX AND FORM A SINGLE PHASE HOMOGENEOUS SOLUTION AT A TEMPER-
Claim 2
Dependent Claim
62 words
A PROCESS FOR THE DISPROPORTIONATION OF DIETHYLBENZENE WHICH PROCESS COMPRISES THE STEPS OF CONTACTING UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS A FEED COMPRISING ESSENTIALLY DIETHYLBENZENE IN THE ABSENCE OF OTHER AROMATIC HYDROCARBON WITH AT LEAST 1 MOL OF BF3 PER MOL OF DIETHYLBENZENE AND SUFFICIENT LIQUID HF TO DISSOLVE ALL OF THE BF3-DIETHYLBENZENE COMPLEX AND FORM A SINGLE PHASE HOMOGENEOUS SOLUTION AT A TEMPER-
References Cited (Backward Citations)
US2521444A
Cited
US2528893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |