US3384583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Greases
Assignee: BP PLC
•
Filing: 1966-09-21
•
Granted: 1968-05-21
•
Expires: 1986-09-21
Abstract
No abstract record available.
Inventors
- 👤 Groszek Aleksander Jerzy
- 👤 Pethrick Samuel Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:30
CPC Classifications
C; C10; C10M; C10M5/00; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/06; C10M2201/065; C10M2201/066; C10M2201/14; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/04; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/30; C10M2207/302; C10M2207/304; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/103; C10M2209/11; C10M2209/111; C10M2209/112; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/06; C10M2227/00; C10M2227/02; C10M2227/04; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2050/00; C10N2050/10; C10N2070/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A LUBRICATING COMPOSITION WHICH IS BASED ON A LUBRICATING BASE OIL CONTAINING IN AN EFFECTIVE AMOUNT AN OLEOPHILIC GRAPHITE HAVING A SURFACE AREA OF FROM 20 TO 800 SQUARE METRES PER GRAM AND PREPARED BY GRINDING NATURAL OR SYNTHETIC GRAPHITE IN ORGANIC LIQUID DISTILLING BELOW 500*C., HAVING A VISCOSITY BELOW 600 CENTISTOKES AT 38*C. AND HAVING A SURFACE TENSION BELOW 72 DEGREES/ CM. AT 25*C.
Claim 2
Dependent Claim
65 words
A LUBRICATING COMPOSITION WHICH IS BASED ON A LUBRICATING BASE OIL CONTAINING IN AN EFFECTIVE AMOUNT AN OLEOPHILIC GRAPHITE HAVING A SURFACE AREA OF FROM 20 TO 800 SQUARE METRES PER GRAM AND PREPARED BY GRINDING NATURAL OR SYNTHETIC GRAPHITE IN ORGANIC LIQUID DISTILLING BELOW 500*C., HAVING A VISCOSITY BELOW 600 CENTISTOKES AT 38*C. AND HAVING A SURFACE TENSION BELOW 72 DEGREES/ CM. AT 25*C.
References Cited (Backward Citations)
US3059769A
Cited
US3338822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |