US2952983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing of hydrocarbon gases
Assignee: Phillips Petroleum Co
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Filing: 1957-08-28
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Granted: 1960-09-20
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Expires: 1977-08-28
Abstract
No abstract record available.
Inventors
- 👤 Forrest E Gilmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:00
CPC Classifications
C; C10; C10G; C10G7/00; C10G7/02; F; F25; F25J; F25J3/00; F25J3/08; Y; Y10; Y10S; Y10S62/00; Y10S62/926
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A HYDROCARBON SEPARATION METHOD WHEREIN A LIGHT COMPONENT IS SEPARATED FROM A HEAVY COMPONENT WITHOUT EXCESSIVE LOSS OF INTERMEDIATE COMPONENT AND WITHOUT HYDRATE FORMATION, WHICH COMPRISES FRACTIONATING A HYDROCARBON STREAM IN A FIRST FRACTIONATION STEP TO OBTAIN A LIQUID BOTTOMS FRACTION AND AN OVERHEAD FRACTION CONTAINING SAID LIGHT AND SAID INTERMEDIATE COMPONENTS, FRACTIONATING SAID OVERHEAD FRACTION IN A SECOND FRACTIONATION STEP TO OBTAIN A BOTTOMS FRACTION COMPRISING SUBSTANTIALLY PURE INTERMEDIATE COMPONENT AS PRODUCT OF THE PROCESS AND AN OVERHEAD FRACTION CONTAINING SAID LIGHT COMPONENT WITH A SMALL PROPORTION OF SAID INTERMEDIATE COMPONENT, CONDENSING SAID RESULTING OVERHEAD FRACTION AT A TEMPERATURE ABOVE A TEMPERATURE AT WHICH HYDRATES FORM, SEPARATING FROM SAID RESULTING CONDENSED OVERHEAD FRACTION A VAPOR FRACTION CONTAINING SAID LIGHT COMPONENT AND A SMALL PROPORTION OF SAID INTERMEDIATE COMPONENT UNAVOIDABLY RETAINED IN SAID VAPORS, COMMINGLING SAID RESULTING VAPOR FRACTION WITH SAID LIQUID BOTTOMS FRACTION, SEPARATING A RESULTING CONDENSED STREAM TO OBTAIN A VAPOR FRACTION COMPRISING ESSENTIALLY ONLY LIGHT COMPONENT AND A LIQUID FRACTION CONTAINING SAID INTERMEDIATE COMPONENT AND SAID COMMINGLED LIQUID, AND RETURNING SAID RESULTING LIQUID FRACTION TO SAID FIRST FRACTIONATION STEP.
Claim 2
Dependent Claim
182 words
A HYDROCARBON SEPARATION METHOD WHEREIN A LIGHT COMPONENT IS SEPARATED FROM A HEAVY COMPONENT WITHOUT EXCESSIVE LOSS OF INTERMEDIATE COMPONENT AND WITHOUT HYDRATE FORMATION, WHICH COMPRISES FRACTIONATING A HYDROCARBON STREAM IN A FIRST FRACTIONATION STEP TO OBTAIN A LIQUID BOTTOMS FRACTION AND AN OVERHEAD FRACTION CONTAINING SAID LIGHT AND SAID INTERMEDIATE COMPONENTS, FRACTIONATING SAID OVERHEAD FRACTION IN A SECOND FRACTIONATION STEP TO OBTAIN A BOTTOMS FRACTION COMPRISING SUBSTANTIALLY PURE INTERMEDIATE COMPONENT AS PRODUCT OF THE PROCESS AND AN OVERHEAD FRACTION CONTAINING SAID LIGHT COMPONENT WITH A SMALL PROPORTION OF SAID INTERMEDIATE COMPONENT, CONDENSING SAID RESULTING OVERHEAD FRACTION AT A TEMPERATURE ABOVE A TEMPERATURE AT WHICH HYDRATES FORM, SEPARATING FROM SAID RESULTING CONDENSED OVERHEAD FRACTION A VAPOR FRACTION CONTAINING SAID LIGHT COMPONENT AND A SMALL PROPORTION OF SAID INTERMEDIATE COMPONENT UNAVOIDABLY RETAINED IN SAID VAPORS, COMMINGLING SAID RESULTING VAPOR FRACTION WITH SAID LIQUID BOTTOMS FRACTION, SEPARATING A RESULTING CONDENSED STREAM TO OBTAIN A VAPOR FRACTION COMPRISING ESSENTIALLY ONLY LIGHT COMPONENT AND A LIQUID FRACTION CONTAINING SAID INTERMEDIATE COMPONENT AND SAID COMMINGLED LIQUID, AND RETURNING SAID RESULTING LIQUID FRACTION TO SAID FIRST FRACTIONATION STEP.
References Cited (Backward Citations)
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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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |