US2630405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel and process for preparaing same
Assignee: Shell Development Co
•
Filing: 1948-04-30
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Granted: 1953-03-03
•
Expires: 1968-04-30
Abstract
No abstract record available.
Inventors
- 👤 Lloyd C Fetterly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:04
CPC Classifications
C; C10; C10L; C10L1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
THE PROCESS FOR THE PREPARATION OF AN ENGINE FUEL HAVING IMPROVED STARTABILITY, HIGH ENDPOINT AND LOW POUR POINT COMPRISING SEPARATELY TREATING TWO PETROLEUM DISTILLATES, THE FIRST OF WHICH HAS A BOILING RANGE WITHIN THE LIMITS 275*-425* F., AND THE SECOND OF WHICH HAS A BOILING RANGE WITHIN THE LIMITS 415*-660* F., WITH AT LEAST ONE COMPLEX-FORMING AGENT HAVING THE GENERAL CONFIGURATION
Claim 2
Dependent Claim
45 words
A NOVEL ENGING FUEL HAVING IMPROVED STARTABILITY, HIGH END-POINT AND LOW POUR POINT CONSISTING ESSENTIALLY OF 5-15% OF SUBSTANTIALLY NORMAL HYDROCARBONS HAVING A BOILING RANGE WITHIN THE LIMITS 275*-425* F., AND 85-95% OF SUBSTANTIALLY NON-NORMAL HYDROCARBONS HAVING A BOILING RANGE WITHIN THE LIMITS 415*-660* F.
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US2361054A
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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) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |