Patent US3116248A successfully refreshed from Google Patents.
US3116248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil composition
Assignee: Shell USA Inc
•
Filing: 1960-12-23
•
Granted: 1963-12-31
•
Expires: 1980-12-23
Abstract
No abstract record available.
Inventors
- 👤 Duncan W Frew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:00
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/08; C07F9/09; C10; C10M; C10M161/00; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/14; C10M2205/16; C10M2205/17; C10M2205/18; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/024; C10M2207/04; C10M2207/046; C10M2207/40; C10M2207/402; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/06; C10M2215/062; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/024; C10M2217/026; C10M2217/028; C10M2217/06; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/084; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/043; C10M2223/047; C10M2223/06; C10M2223/063; C10M2223/065; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
AN IMPROVED MINERAL OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND FROM ABOUT 0.1% TO ABOUT 10% OF EACH OF A COPOLYMER OF A POLYMERIZABLE BASIC HETEROCYCLIC AMINE SELECTED FROM THE GROUP CONSISTING OF VINYL PYRROLIDINE AND VINYL PYRIDINE AND A POLYMERIZABLE MATERIAL FREE OF HETEROCYCLIC NITROGEN-CONTAINING GROUPS SELECTED FROM LONG-CHAIN ALKYL ACARYLATES AND LONG-CHAIN ALKYL METHACRYLATES HAVING A MOLECULAR WEIGHT OF FROM 100,000 TO 850,000 AND AN OIL-SOLUBLE C8-16 ALKYL GUANIDINE SALT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROCARBYL ACID PHOSPHONATE AND A HYDROCARBYL ACID PHOSPHATE THE HYDROCARBYL RADICAL HAVING FROM 1 TO 18 CARBON ATOMS AND SELECTED FROM THE GROUP CONSISTING OF ALKLY AND CHLOROALKYL RADICALS.
Claim 2
Dependent Claim
114 words
AN IMPROVED MINERAL OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND FROM ABOUT 0.1% TO ABOUT 10% OF EACH OF A COPOLYMER OF A POLYMERIZABLE BASIC HETEROCYCLIC AMINE SELECTED FROM THE GROUP CONSISTING OF VINYL PYRROLIDINE AND VINYL PYRIDINE AND A POLYMERIZABLE MATERIAL FREE OF HETEROCYCLIC NITROGEN-CONTAINING GROUPS SELECTED FROM LONG-CHAIN ALKYL ACARYLATES AND LONG-CHAIN ALKYL METHACRYLATES HAVING A MOLECULAR WEIGHT OF FROM 100,000 TO 850,000 AND AN OIL-SOLUBLE C8-16 ALKYL GUANIDINE SALT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROCARBYL ACID PHOSPHONATE AND A HYDROCARBYL ACID PHOSPHATE THE HYDROCARBYL RADICAL HAVING FROM 1 TO 18 CARBON ATOMS AND SELECTED FROM THE GROUP CONSISTING OF ALKLY AND CHLOROALKYL RADICALS.
References Cited (Backward Citations)
US2779739A
Cited
US2285853A
Cited
US2370756A
Cited
US2373021A
Cited
US2644792A
Cited
US2766707A
Cited
US2798045A
Cited
GB822620A
Cited
US2889282A
Cited
US3041279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |