Patent US3309410A successfully refreshed from Google Patents.
US3309410A
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Isomerization process
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1964-10-06
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Granted: 1967-03-14
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Expires: 1984-10-06
Abstract
No abstract record available.
Inventors
- 👤 Schriesheim Alan
- 👤 Jr Charles A Rowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:30
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C5/2562; C07C5/2575
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A METHOD OF CONVERTING NONCONJUGATED CYCLIC DIOLEFINS TO CYCLIC CONJUGATED DIOLEFIN ISOMERS WHEREIN BOTH THE NONCONJUGATED AND CONJUGATED DIOLEFINS CONTAIN ONE DOUBLE BOND WITHIN THE CYCLIC STRUCTURE AND ONE DOUBLE BOND ON A SUBSTITUENT SIDE CHAIN, IN HIGH SELECTIVITIES AND YIELDS WHICH COMPRISES MAINTAINING A NONCONJUGATED CYCLIC DIOLEFIN IN CONTRACT WITH A BASE-SOLVENT SYSTEM WHEREIN SAID SOLVENT IS AN APROTIC, DIPOLAR, NONHYDROXYLIC ORGANIC LIQUID HAVING A DIELECTRIC CONSTANT IN EXCESS OF 15 DEBYES AT 25*C. AND SAID BASE IS SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDRIDES, INORGANIC AMIDES, ALKOXIDES, HYDROXIDES, AND ALKYLS AT TEMPERATURES OF FROM ABOUT 10 TO 300*C. AND FOR A PERIOD SUFFICIENT TO CONVERT THE SAME PRINCIPALLY TO CONJUGATED DIOLEFIN ISOMERS.
Claim 2
Independent Claim
116 words
A METHOD OF CONVERTING NONCONJUGATED CYCLIC DIOLEFINS TO CYCLIC CONJUGATED DIOLEFIN ISOMERS WHEREIN BOTH THE NONCONJUGATED AND CONJUGATED DIOLEFINS CONTAIN ONE DOUBLE BOND WITHIN THE CYCLIC STRUCTURE AND ONE DOUBLE BOND ON A SUBSTITUENT SIDE CHAIN, IN HIGH SELECTIVITIES AND YIELDS WHICH COMPRISES MAINTAINING A NONCONJUGATED CYCLIC DIOLEFIN IN CONTRACT WITH A BASE-SOLVENT SYSTEM WHEREIN SAID SOLVENT IS AN APROTIC, DIPOLAR, NONHYDROXYLIC ORGANIC LIQUID HAVING A DIELECTRIC CONSTANT IN EXCESS OF 15 DEBYES AT 25*C. AND SAID BASE IS SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDRIDES, INORGANIC AMIDES, ALKOXIDES, HYDROXIDES, AND ALKYLS AT TEMPERATURES OF FROM ABOUT 10 TO 300*C. AND FOR A PERIOD SUFFICIENT TO CONVERT THE SAME PRINCIPALLY TO CONJUGATED DIOLEFIN ISOMERS.
References Cited (Backward Citations)
US3213155A
Cited
US3217050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |