US2937215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerization process and preparation of feed stream therefor
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-01-07
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Granted: 1960-05-17
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Expires: 1977-01-07
Abstract
No abstract record available.
Inventors
- 👤 Bleich Leon
- 👤 Norman J Weinstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:21
CPC Classifications
C; C10; C10G; C10G61/00; C10G61/02; C10G61/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS FOR UPGRADING A LIGHT NAPHTHA FRACTION CONTAINING AROMATIC HYDROCARBONS AND NORMAL PARAFFIN HYDROCARBONS, INCLUDING NORMAL HEXANE, WHICH COMPRISES THE STEPS OF REMOVING FROM THE NAPHTHA ALL HYDROCARBONS LOWER THAN C6 HYDROCARBONS, PASSING THE REMAINING FRACTION THROUGH A CONTACTING ZONE CONTAINING AN ADSORBENT MATERIAL SELECTIVE TO AROMATIC HYDROCARBONS, WHEREBY AROMATIC HYDROCARBONS ARE SELECTIVELY REMOVED FROM THE SAID NAPHTHA FRACTION BY ADSORPTION, SUBJECTING THE RESULTING AROMATIC-FREE NAPHTHA TO A FRACTIONATION STEP WHEREIN NORMAL HEXANE AND METHYL PENTANES ARE
Claim 2
Dependent Claim
78 words
A PROCESS FOR UPGRADING A LIGHT NAPHTHA FRACTION CONTAINING AROMATIC HYDROCARBONS AND NORMAL PARAFFIN HYDROCARBONS, INCLUDING NORMAL HEXANE, WHICH COMPRISES THE STEPS OF REMOVING FROM THE NAPHTHA ALL HYDROCARBONS LOWER THAN C6 HYDROCARBONS, PASSING THE REMAINING FRACTION THROUGH A CONTACTING ZONE CONTAINING AN ADSORBENT MATERIAL SELECTIVE TO AROMATIC HYDROCARBONS, WHEREBY AROMATIC HYDROCARBONS ARE SELECTIVELY REMOVED FROM THE SAID NAPHTHA FRACTION BY ADSORPTION, SUBJECTING THE RESULTING AROMATIC-FREE NAPHTHA TO A FRACTIONATION STEP WHEREIN NORMAL HEXANE AND METHYL PENTANES ARE
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) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |