US3166387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ammonium carboxylate pour point depressants for fuel oil composition
Assignee: Standard Oil Co
•
Filing: 1961-07-17
•
Granted: 1965-01-19
•
Expires: 1981-07-17
Abstract
No abstract record available.
Inventors
- 👤 Herman G Ebner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:12
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/143; C10L1/16; C10L1/1625; C10L1/1633; C10L1/1641; C10L1/22; C10L1/222; C10L1/2222
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
34 words
A FUEL OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF A DISTILLATE FUEL OIL AND AN AMOUNT IN THE RANGE OF 0.001 TO 5 WEIGHT PERCENT OF A QUATERNARY AMMONIUM SALT HAVING THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
34 words
A FUEL OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF A DISTILLATE FUEL OIL AND AN AMOUNT IN THE RANGE OF 0.001 TO 5 WEIGHT PERCENT OF A QUATERNARY AMMONIUM SALT HAVING THE STRUCTURAL FORMULA:
Claim 3
Dependent Claim
60 words
THE FUEL OIL COMPOSITION OF CLAIM 1 WHICH CONTAINS IN ADDITION TO SAID AMMONIUM SALT, FROM 0.01 TO 5 WEIGHT PERCENT OF AN OIL-SOLUBLE-LOW-DENSITY LOW MOLECULAR WEIGHT HYDROCARBON POLYMER OF ETHYLENE SELECTED FROM THE CLASS CONSISTING OF POLYETHYLENE AND COPOLYMERS OF ETHYLENE WITH C2 TO C5 MONO-OLEFINIC HYDROCARBON WHICH POLYMERS HAVE AN INTRINSIC VICOSITY OF FROM 0.05 TO 0.25 DI./G.
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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) | 1968-01-19 | 1968-07-20 | 1969-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-19 | 1972-07-20 | 1973-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-19 | 1976-07-20 | 1977-01-19 | $7700.00 | Window Closed / Lapsed |