Patent US2805998A successfully refreshed from Google Patents.
US2805998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant compositions
Assignee: Gulf Oil Corp
•
Filing: 1955-09-14
•
Granted: 1957-09-10
•
Expires: 1975-09-14
Abstract
No abstract record available.
Inventors
- 👤 Troy L Cantrell
- 👤 John G Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:33
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR AMOUNT OF A LUBRICATING OIL AND A MINOR AMOUNT SUFFICIENT TO IMPROVE THE DETERGENT CHARACTERISTICS OF SAID LUBRICATING OIL, OF AN AROMATIC DIALKANOL AMINE WHEREIN THE AROMATIC RADICAL IS SELECTED FROM THE GROUP CONSISTING OF PHENYL, TOLYL AND XYLYL AND THE ALKANOL RADICALS EACH CONTAIN FROM 2 TO 4 CARBON ATOMS,SAID MINOR AMOUNT BEING FROM ABOUT 0.5 TO ABOUT 10 PERCENT BY WEIGHT OF THE TOTAL COMPOSITION.
Claim 2
Dependent Claim
73 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR AMOUNT OF A LUBRICATING OIL AND A MINOR AMOUNT SUFFICIENT TO IMPROVE THE DETERGENT CHARACTERISTICS OF SAID LUBRICATING OIL, OF AN AROMATIC DIALKANOL AMINE WHEREIN THE AROMATIC RADICAL IS SELECTED FROM THE GROUP CONSISTING OF PHENYL, TOLYL AND XYLYL AND THE ALKANOL RADICALS EACH CONTAIN FROM 2 TO 4 CARBON ATOMS,SAID MINOR AMOUNT BEING FROM ABOUT 0.5 TO ABOUT 10 PERCENT BY WEIGHT OF THE TOTAL COMPOSITION.
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) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |