Patent US3004083A successfully refreshed from Google Patents.
US3004083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon separation
Assignee: Phillips Petroleum Co
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Filing: 1958-02-14
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Granted: 1961-10-10
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Expires: 1978-02-14
Abstract
No abstract record available.
Inventors
- 👤 Fred A Siedenstrang
- 👤 Gene K Reinmuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:28
CPC Classifications
C; C07; C07C; C07C11/00; C07C11/12; C07C11/16; C07C11/167; C07C11/02; C07C11/08; C07C7/00; C07C7/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN THE PROCESS WHEREIN NORMAL BUTANE IS DEHYDROGENATED TO FORM OLEFINS AND DIOLEFINS, C3 AND LIGHTER MATERIALS ARE REMOVED FROM THE DEHYDROGENATION EFFLUENT, THE BUTADIENE IS RECOVERED AND THE OLEFINS AND REMAINING NORMAL BUTANE ARE SEPARATED AND PASSED TO RESPECTIVE DEHYDROGENATION STEPS, THE IMPROVEMENT COMPRISING PASSING THE BUTANE DEHYDROGENATION EFFLUENT, FROM WHICH C3 AND LIGHTER HYDROCARBONS HAVE BEEN REMOVED, AND WITHOUT FURTHER TREATMENT, TO A FRACTIONAL DISTILLATION DE-OILING STEP SO AS TO REMOVE C5 AND HEAVIER HYDROCARBONS AS THE KETTLE PRODUCT, COOLING AND PASSING THE OVERHEAD PRODUCT FROM THE DE-OILING STEP TO A SURGE STORAGE ZONE, PASSING A STREAM OF HYDROCARBON, WITHOUT FURTHER TREATMENT, FROM
Claim 2
Dependent Claim
105 words
IN THE PROCESS WHEREIN NORMAL BUTANE IS DEHYDROGENATED TO FORM OLEFINS AND DIOLEFINS, C3 AND LIGHTER MATERIALS ARE REMOVED FROM THE DEHYDROGENATION EFFLUENT, THE BUTADIENE IS RECOVERED AND THE OLEFINS AND REMAINING NORMAL BUTANE ARE SEPARATED AND PASSED TO RESPECTIVE DEHYDROGENATION STEPS, THE IMPROVEMENT COMPRISING PASSING THE BUTANE DEHYDROGENATION EFFLUENT, FROM WHICH C3 AND LIGHTER HYDROCARBONS HAVE BEEN REMOVED, AND WITHOUT FURTHER TREATMENT, TO A FRACTIONAL DISTILLATION DE-OILING STEP SO AS TO REMOVE C5 AND HEAVIER HYDROCARBONS AS THE KETTLE PRODUCT, COOLING AND PASSING THE OVERHEAD PRODUCT FROM THE DE-OILING STEP TO A SURGE STORAGE ZONE, PASSING A STREAM OF HYDROCARBON, WITHOUT FURTHER TREATMENT, FROM
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) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |