US2813830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon oil compositions
Assignee: Gulf Research and Development Co
•
Filing: 1954-09-20
•
Granted: 1957-11-19
•
Expires: 1974-09-20
Abstract
No abstract record available.
Inventors
- 👤 Charles E Trautman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:37
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/02; C07F5/04; C10; C10M; C10M1/00; C10M1/08; C10M2203/00; C10M2203/10; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/22; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/025; C10M2207/026; C10M2207/04; C10M2207/046; C10M2207/10; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/16; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/101; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/024; C10M2211/06; C10M2211/08; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2227/00; C10M2227/06; C10M2227/061; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/14; C10N2010/16; C10N2040/00; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PROPORTION OF A HYDROCARBON OIL AND MINOR PROPORTIONS OF EACH OF AN ALKYL PHENOL ANTIOXIDANT WHEREIN THE ALKYL GROUP CONTAINS 4 TO 8 CARBON ATOMS AND A TRIALKYL ORTHOBORATE HAVING THE GENERAL FORMULA (XO)3B IN WHICH X REPRESENTS A SECONDARY ALKYL RADICAL HAVING 5 TO 9 CARBON ATOMS, THE ADDITIVE CONSTITUENTS BEING PRESENT IN AN AMOUNT SUFFICIENT TO PRODUCE A COMPOSITION HAVING AN INDUCTION PERIOD LONGER THAN THE SUM OF THE INDUCTION PERIODS OF TWO COMPOSITIONS PRODUCED BY INCORPORATING EACH OF THE ADDITIVE CONSTITUENTS ALONE IN PORTIONS OF THE SAME HYDROCARBON OIL.
Claim 2
Dependent Claim
99 words
A COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PROPORTION OF A HYDROCARBON OIL AND MINOR PROPORTIONS OF EACH OF AN ALKYL PHENOL ANTIOXIDANT WHEREIN THE ALKYL GROUP CONTAINS 4 TO 8 CARBON ATOMS AND A TRIALKYL ORTHOBORATE HAVING THE GENERAL FORMULA (XO)3B IN WHICH X REPRESENTS A SECONDARY ALKYL RADICAL HAVING 5 TO 9 CARBON ATOMS, THE ADDITIVE CONSTITUENTS BEING PRESENT IN AN AMOUNT SUFFICIENT TO PRODUCE A COMPOSITION HAVING AN INDUCTION PERIOD LONGER THAN THE SUM OF THE INDUCTION PERIODS OF TWO COMPOSITIONS PRODUCED BY INCORPORATING EACH OF THE ADDITIVE CONSTITUENTS ALONE IN PORTIONS OF THE SAME HYDROCARBON OIL.
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) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |