Patent US824393A successfully refreshed from Google Patents.
Patent US2579890A successfully refreshed from Google Patents.
US2579890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonclogging distillate fuel oil
Assignee: Shell Development Co
•
Filing: 1948-07-03
•
Granted: 1951-12-25
•
Expires: 1968-07-03
Abstract
No abstract record available.
Inventors
- 👤 Wies Calmy
- 👤 John B R Caron
- 👤 Everett B Glendenning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:31
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/16; C10L1/1616; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/935
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
52 words
A NON-CLOGGING DISTILLATE FUEL OIL CONTAINING ENTRAINED MOISTURE NORMALLY SUSCEPTIBLE TO CAUSE CLOGGING DUE TO THE PRESENCE OF CRACKED COMPONENTS IN SAID FUEL TO THE PRESENCE OF CRACKED COMPOCLOGGING BY INCORPORATING THEREIN ABOUT 0.005% DIOCTYL SODIUM SULFOSUCCINATE, ABOUT 0.0042% BARIUM SALT OF ALKYL PHENOL DISULFIDE AND ABOUT 0.0265% DIETHYLENE GLYCOL MONOBUTYL ETHER.
References Cited (Backward Citations)
US2028091A
Cited
US2221839A
Cited
US2362291A
Cited
US2296069A
Cited
US2316739A
Cited
US2369490A
Cited
US2456569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |