Patent US2543286A successfully refreshed from Google Patents.
US2543286A
Expired / Lapsed
US
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Process for separating hydrocarbons
Assignee: Sunoco Inc
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Filing: 1947-12-26
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Granted: 1951-02-27
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Expires: 1967-12-26
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Hirschler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:41
CPC Classifications
C; C10; C10G; C10G25/00; C07; C07C; C07C7/00; C07C7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN A PROCESS OF SEPARATING HYDROCARBONS OF THE SAME DEGREE OF SATURATION BY SELECTIVE ADSORPTION WHEREIN A LIQUID MIXTURE OF SUCH HYDROCARBONS IS TREATED WITH A GRANULAR ADSORBENT AT A TEMPERATURE AT WHICH THE HYDROCARBONS EXHIBIT AN S-TYPE ADSORPTION ISOTHERM AND THE MIXTURE IS THEREBY SEPARATED INTO A FRACTION CONTAINING ONE OF THE HYDROCARBONS IN RELATIVELY PURIFIED FORM AND ANOTHER FRACTION CONTAINING THE CHARGE HYDROCARBONS IN A PROPORTION APPROACHING THAT AT WHICH THEIR ADSORBABILITIES ARE THE SAME, THE IMPROVEMENT WHICH COMPRISES THEN TREATING THE LAST-NAMED FRACTION IN LIQUID PHASE WITH ADSORBENT OF THE SAME TYPE AT A SUBSTANTIALLY DIFFERENT TEMPERATURE FORM THAT OF THE FIRST TREATMENT, THEREBY EFFECTING FUTHER SEPARATION OF SAID HYDROCARBONS.
Claim 2
Dependent Claim
113 words
IN A PROCESS OF SEPARATING HYDROCARBONS OF THE SAME DEGREE OF SATURATION BY SELECTIVE ADSORPTION WHEREIN A LIQUID MIXTURE OF SUCH HYDROCARBONS IS TREATED WITH A GRANULAR ADSORBENT AT A TEMPERATURE AT WHICH THE HYDROCARBONS EXHIBIT AN S-TYPE ADSORPTION ISOTHERM AND THE MIXTURE IS THEREBY SEPARATED INTO A FRACTION CONTAINING ONE OF THE HYDROCARBONS IN RELATIVELY PURIFIED FORM AND ANOTHER FRACTION CONTAINING THE CHARGE HYDROCARBONS IN A PROPORTION APPROACHING THAT AT WHICH THEIR ADSORBABILITIES ARE THE SAME, THE IMPROVEMENT WHICH COMPRISES THEN TREATING THE LAST-NAMED FRACTION IN LIQUID PHASE WITH ADSORBENT OF THE SAME TYPE AT A SUBSTANTIALLY DIFFERENT TEMPERATURE FORM THAT OF THE FIRST TREATMENT, THEREBY EFFECTING FUTHER SEPARATION OF SAID HYDROCARBONS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |