US2593561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing rich-mixture aviation fuel
Assignee: Standard Oil Development Co
•
Filing: 1948-09-04
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Granted: 1952-04-22
•
Expires: 1968-09-04
Abstract
No abstract record available.
Inventors
- 👤 Walter A Herbst
- 👤 Jr William C Howell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:41
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/04; C10L1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A METHOD OF PREPARING HIGH QUALITY, RICH MIXTURE AVIATION FUEL WHICH COMPRISES FRACTIONATING AN AROMATIC HYDROCARBON-CONTAINING GASOLINE FRACTION TO OBTAIN A FRACTION CONTAINING C8 AND C9 INCLUSIVE AROMATIC HYDROCARBONS, INCLUDING ETHYL BENZENE, ORTHO, META, AND PARA XYLENE, MESITYLENE AND PSEUDOCUMENE, EXTRACTING THE SAID AROMATIC HYDROCARBONS FROM THE NON-AROMATIC HYDROCARBONS IN THE C8-C9 FRACTION, REMOVING FROM SAID EXTRACTED AROMATIC HYDROCAR-
Claim 2
Independent Claim
59 words
A METHOD OF PREPARING HIGH QUALITY, RICH MIXTURE AVIATION FUEL WHICH COMPRISES FRACTIONATING AN AROMATIC HYDROCARBON-CONTAINING GASOLINE FRACTION TO OBTAIN A FRACTION CONTAINING C8 AND C9 INCLUSIVE AROMATIC HYDROCARBONS, INCLUDING ETHYL BENZENE, ORTHO, META, AND PARA XYLENE, MESITYLENE AND PSEUDOCUMENE, EXTRACTING THE SAID AROMATIC HYDROCARBONS FROM THE NON-AROMATIC HYDROCARBONS IN THE C8-C9 FRACTION, REMOVING FROM SAID EXTRACTED AROMATIC HYDROCAR-
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) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |