US2652439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon separation
Assignee: Phillips Petroleum Co
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Filing: 1949-11-03
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Granted: 1953-09-15
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Expires: 1969-11-03
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Neuhart
- 👤 Gerhard A Gohlke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:41
CPC Classifications
C; C10; C10G; C10G21/00; C07; C07C; C07C7/00; C07C7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
THE PROCESS FOR RESOLVING A MIXTURE OF CLOSEBOILING UNSATURATED AND MORE SATURATED ALIPHATIC HYDROCARBONS WHICH COMPRISES CONTACTING SAID MIXTURE IN LIQUID PHASE WITH A LIQUID SOLVENT HIGHER BOILING THAN THE HYDROCARBONS IN SAID MIXTURE AND SELECTIVE FOR THE MORE UNSATURATED HYDROCARBONS IN SAID MIXTURE FRACTIONALLY DISTILLING THE EXTRACT PHASE FROM SAID CONTACTING STEP IN THE PRESENCE OF AN INERT ORGANIC COMPOUND BOILING INTERMEDIATE SAID SOLVENT AND THE HYDROCARBONS IN SAID MIXTURE, RECOVERING FROM SAID FRACTIONATION STEP AN UNSATURATED HYDROCARBON CONCENTRATE AS A PRODUCT OF THE PROCESS, WITHDRAWING A FIRST BOTTOMS PRODUCT FROM SAID FRACTIONATION STEP CONTAINING LIQUID SOLVENT AND INTERMEDIATE BOILING ORGANIC COMPOUND AT A TEMPERATURE HIGHER THAN THE TEMPERATURE OF A SECON BOTTOMS PRODUCT FROM A SECOND FRACTIONATION STEP TO BE DESCRIBED, PASSING SAID FIRST BOTTOMS PRODUCT AT SAID HIGHER TEMPERATURE FROM SAID FIRST FRACTIONATION STEP TO SAID SECOND FRACTIONATION STEP, FRACTIONALLY DISTILLING RAFFINATE PHASE FROM SAID FIRST-NAMED CONTACTING STEP IN THE
Claim 2
Dependent Claim
153 words
THE PROCESS FOR RESOLVING A MIXTURE OF CLOSEBOILING UNSATURATED AND MORE SATURATED ALIPHATIC HYDROCARBONS WHICH COMPRISES CONTACTING SAID MIXTURE IN LIQUID PHASE WITH A LIQUID SOLVENT HIGHER BOILING THAN THE HYDROCARBONS IN SAID MIXTURE AND SELECTIVE FOR THE MORE UNSATURATED HYDROCARBONS IN SAID MIXTURE FRACTIONALLY DISTILLING THE EXTRACT PHASE FROM SAID CONTACTING STEP IN THE PRESENCE OF AN INERT ORGANIC COMPOUND BOILING INTERMEDIATE SAID SOLVENT AND THE HYDROCARBONS IN SAID MIXTURE, RECOVERING FROM SAID FRACTIONATION STEP AN UNSATURATED HYDROCARBON CONCENTRATE AS A PRODUCT OF THE PROCESS, WITHDRAWING A FIRST BOTTOMS PRODUCT FROM SAID FRACTIONATION STEP CONTAINING LIQUID SOLVENT AND INTERMEDIATE BOILING ORGANIC COMPOUND AT A TEMPERATURE HIGHER THAN THE TEMPERATURE OF A SECON BOTTOMS PRODUCT FROM A SECOND FRACTIONATION STEP TO BE DESCRIBED, PASSING SAID FIRST BOTTOMS PRODUCT AT SAID HIGHER TEMPERATURE FROM SAID FIRST FRACTIONATION STEP TO SAID SECOND FRACTIONATION STEP, FRACTIONALLY DISTILLING RAFFINATE PHASE FROM SAID FIRST-NAMED CONTACTING STEP IN THE
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) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |