Patent US5177440A successfully refreshed from Google Patents.
Patent US3154482A successfully refreshed from Google Patents.
US3154482A
Expired / Lapsed
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Combined steam cracker and butene dehydrogenation light ends
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1959-11-02
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Granted: 1964-10-27
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Expires: 1979-11-02
Abstract
No abstract record available.
Inventors
- 👤 Robert P Cahn
- 👤 Robert H Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:02
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
AN IMPROVED SYSTEM FOR PROCESSING THE LIGHT ENDS FROM A STEAM CRACKER AND FOR PROCESSING THE LIGHT ENDS FROM A BUTENE DEHYDROGENATION UNIT, WHICH COMPRISES COMBINING THE LIGHT ENDS FROM A STEAM CRACKER OPERATED TO PRODUCE MAINLY OLEFINS AND DIOLEFINS, SAID LIGHT ENDS COMPRISING MAINLY C6 AND LIGHTER HYDROCARBONS INCLUDING C3 HYDROCARBONS, WITH THE EFFLUENT FROM A CYCLIC BUTENE DEHYDROGENATION UNIT, A FLUCTUATION IN THE FLOW OF PRODUCT GASES FROM THE BUTENE DEHYDROGENATION EFFLUENT BEING OBTAINED DURING THE REPLACEMENT OF THE RE-
Claim 2
Dependent Claim
82 words
AN IMPROVED SYSTEM FOR PROCESSING THE LIGHT ENDS FROM A STEAM CRACKER AND FOR PROCESSING THE LIGHT ENDS FROM A BUTENE DEHYDROGENATION UNIT, WHICH COMPRISES COMBINING THE LIGHT ENDS FROM A STEAM CRACKER OPERATED TO PRODUCE MAINLY OLEFINS AND DIOLEFINS, SAID LIGHT ENDS COMPRISING MAINLY C6 AND LIGHTER HYDROCARBONS INCLUDING C3 HYDROCARBONS, WITH THE EFFLUENT FROM A CYCLIC BUTENE DEHYDROGENATION UNIT, A FLUCTUATION IN THE FLOW OF PRODUCT GASES FROM THE BUTENE DEHYDROGENATION EFFLUENT BEING OBTAINED DURING THE REPLACEMENT OF THE RE-
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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) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |