US2935467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionation process using zeolitic molecular sieves
Assignee: Union Oil Company of California
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Filing: 1956-07-27
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Granted: 1960-05-03
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Expires: 1976-07-27
Abstract
No abstract record available.
Inventors
- 👤 Raymond N Fleck
- 👤 Carlyle G Wight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:30
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/12; C07C7/13; C10; C10G; C10G25/00; C10G25/02; C10G25/03; C10G27/00; C10G27/04; C10G27/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
174 words
THE PROCESS FOR TREATING TWO HYDROCARBON MIXTURES OF DIFFERENT BOILING RANGE, EACH OF WHICH CONSISTS ESSENTIALLY OF STRAIGHT CHAIN AND NON-STRAIGHT CHAIN HYDROCARBONS HAVING BOILING POINTS WITHIN THE GASOLINE BOILING RANGE, WHICH COMPRISES: (1) FLOWING THE LOWER BOILING MIXTURE IN CONTACT WITH A SOLID GRANULAR ADSORBENT CONSISTING ESSENTIALLY OF A PARTIALLY DEHYDRATED ZEOLITIC METALLO ALUMINO SILICATE HAING SUBSTANTIALLY UNIFORM INTRACRYSTALLINE PORES OF ABOUT 5 A. IN DIAMETER, SAID ADSORBENT HAVING ADSORBED THEREON STRAIGHT CHAIN COMPONENTS OF THE HIGHER BOILING MIXTURE, WHEREBY SAID ADSORBED STRAIGHT CHAIN COMPONENTS OF SAID HIGHER BOILING MIXTURE ARE DESORBED AND THE STRAIGHT CHAIN COMPONENTS OF THE LOWER BOILING MIXTURE ARE ADSORBED, AND THERE IS OBTAINED A FIRST EFFLUENT COMPRISING THE NON-STRAIGHT CHAIN COMPONENTS OF THE LOWER BOILING MIXTURE AND THE DESORBED STRAIGHT CHAIN COMPONENTS OF THE HIGHER BOILING MIXTURE, (2) SEPARATING SAID FIRST EFFLUENT FROM SAID ADSORBENT, (3) THEN FLOWING SAID HIGHER BOILING MIXTURE IN CONTACT WITH THE ADSORBENT, WHEREBY THE ADSORBED STRAIGHT CHAIN COMPONENTS OF THE LOWER BOILING MIXTURE ARE DESORBED AND THE STRAIGHT CHAIN COMPONENTS OF THE HIGHER
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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) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |