US2938858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recycle reforming and solvent extraction
Assignee: Universal Oil Products Co
•
Filing: 1957-02-11
•
Granted: 1960-05-31
•
Expires: 1977-02-11
Abstract
No abstract record available.
Inventors
- 👤 Kenneth M Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:51
CPC Classifications
C; C10; C10G; C10G21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PROCESS FOR PRODUCING AN AROMATIC CONCENTRATE WHICH COMPRISES CATALYTICALLY REFORMING A GASOLINE BOILING RANGE FRACTION AT REFORMING CONDITIONS WHEREBY AT LEAST A PORTION OF SAID FRACTION IS CONVERTED INTO MONOCYCLIC AROMATIC HYDROCARBONS CONTACTING THE REFORMATE PRODUCT WITH A SOLVENT WHICH SELECTIVELY EXTRACTS THE AROMATIC COMPONENTS THEREFROM TO FORM A RICH SOLVENT CONTAINING SAID AROMATIC COMPOUNDS IN SOLUTIONS, SEPARATING SAID RICH SOLVENT FROM A RAFFINATE COMPRISING NONAROMATIC HYDROCARBONS IN SAID REFORMATE, STRIPPING SAID RICH SOLVENT TO RECOVER AN AROMATIC EXTRACT FROM A LEAN SOLVENT RESIDUE, RECYCLING SAID RAFFINATE TO SAID REFORMING STEP, WASHING SAID LEAN SOLVENT WITH A LIQUID, NON-AROMATIC WASH HYDROCARBON OF SUFFICIENT QUANTITY TO EXTRACT POLY-
Claim 2
Dependent Claim
108 words
A PROCESS FOR PRODUCING AN AROMATIC CONCENTRATE WHICH COMPRISES CATALYTICALLY REFORMING A GASOLINE BOILING RANGE FRACTION AT REFORMING CONDITIONS WHEREBY AT LEAST A PORTION OF SAID FRACTION IS CONVERTED INTO MONOCYCLIC AROMATIC HYDROCARBONS CONTACTING THE REFORMATE PRODUCT WITH A SOLVENT WHICH SELECTIVELY EXTRACTS THE AROMATIC COMPONENTS THEREFROM TO FORM A RICH SOLVENT CONTAINING SAID AROMATIC COMPOUNDS IN SOLUTIONS, SEPARATING SAID RICH SOLVENT FROM A RAFFINATE COMPRISING NONAROMATIC HYDROCARBONS IN SAID REFORMATE, STRIPPING SAID RICH SOLVENT TO RECOVER AN AROMATIC EXTRACT FROM A LEAN SOLVENT RESIDUE, RECYCLING SAID RAFFINATE TO SAID REFORMING STEP, WASHING SAID LEAN SOLVENT WITH A LIQUID, NON-AROMATIC WASH HYDROCARBON OF SUFFICIENT QUANTITY TO EXTRACT POLY-
References Cited (Backward Citations)
US2241430A
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US2415700A
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US2721164A
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US2745790A
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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) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |