US2950336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of aromatics and olefins using zeolitic molecular sieves
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1956-12-07
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Granted: 1960-08-23
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Expires: 1976-12-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles Newton Kimberlin
- 👤 Mattox William Judson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:35
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/02; C10G25/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A PROCESS FOR SELECTIVELY SEPARATING HYDROCARBONS SELECTED FROM THE GROUP CONSISTING OF AROMATIC HYDROCARBONS AND MIXTURE OF AROMATIC HYDROCARBONS AND OLEFINIC HYDROCARBONS, FROM A HYDROCARBON FEEDSTOCK INCLUDING SAID HYDROCARBONS IN ADMIXTURE WITH OTHER HYDROCARBONS, WHICH COMPRISES: PASSING SAID FEEDSTOCK IN THE VAPO PHASE INTO ONE END OF FIRST, AND THEN THROUGH ONE END OF A SECOND, OF A SERIES OF TWO SEPARATE MOLECULAR SIEVE ADSORPTION ZONES FOR A PERIOD OF TIME AT LEAST SUFFICIENT TO DESORB FROM SAID FIRST ZONE ALL HYDROCARBONS OTHER THAN OLEFINS AND AROMATICS INITIALLY ABSORBED IN SAID FIRST ZONE, DISCONTINUING THE PASSING OF SAID FEEDSTOCK THROUGH SAID ZONES, DESORBING AND RECOVERING THE ADSORBED HYDROCARBON FROM SAID FIRST ZONE, PASSING SAID OND AND THEN THROUGH THE OTHER END OF SAID FIRST OF FIRST ZONES FOR A PERIOD OF TIME AT LEAST SUFFICIENT TO DESORB FROM SAID SECOND ZONE ALL HYDROCARBONS OTHER THAN OLEFINES AND AROMATICS ADSORBED IN SAID SECOND ZONE, DISCONTINUING THE FLOW OF SAID FEEDSTOCK TO SAID ZONES, AND DESORBING AND RECOVERING THE ADSORBED HYDROCARBONS FROM SAID SECOND ZONE.
Claim 2
Dependent Claim
173 words
A PROCESS FOR SELECTIVELY SEPARATING HYDROCARBONS SELECTED FROM THE GROUP CONSISTING OF AROMATIC HYDROCARBONS AND MIXTURE OF AROMATIC HYDROCARBONS AND OLEFINIC HYDROCARBONS, FROM A HYDROCARBON FEEDSTOCK INCLUDING SAID HYDROCARBONS IN ADMIXTURE WITH OTHER HYDROCARBONS, WHICH COMPRISES: PASSING SAID FEEDSTOCK IN THE VAPO PHASE INTO ONE END OF FIRST, AND THEN THROUGH ONE END OF A SECOND, OF A SERIES OF TWO SEPARATE MOLECULAR SIEVE ADSORPTION ZONES FOR A PERIOD OF TIME AT LEAST SUFFICIENT TO DESORB FROM SAID FIRST ZONE ALL HYDROCARBONS OTHER THAN OLEFINS AND AROMATICS INITIALLY ABSORBED IN SAID FIRST ZONE, DISCONTINUING THE PASSING OF SAID FEEDSTOCK THROUGH SAID ZONES, DESORBING AND RECOVERING THE ADSORBED HYDROCARBON FROM SAID FIRST ZONE, PASSING SAID OND AND THEN THROUGH THE OTHER END OF SAID FIRST OF FIRST ZONES FOR A PERIOD OF TIME AT LEAST SUFFICIENT TO DESORB FROM SAID SECOND ZONE ALL HYDROCARBONS OTHER THAN OLEFINES AND AROMATICS ADSORBED IN SAID SECOND ZONE, DISCONTINUING THE FLOW OF SAID FEEDSTOCK TO SAID ZONES, AND DESORBING AND RECOVERING THE ADSORBED HYDROCARBONS FROM SAID SECOND ZONE.
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) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |