Patent US2602048A successfully refreshed from Google Patents.
US2602048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil additives
Assignee: Standard Oil Development Co
•
Filing: 1951-03-08
•
Granted: 1952-07-01
•
Expires: 1971-03-08
Abstract
No abstract record available.
Inventors
- 👤 Adlai E Michaels
- 👤 Niilo V Hakala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:28
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/04; C10M2207/046; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/12; C10M2223/121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A NON- TURBID LUBRICATING OIL BLEND HAVING A HIGH VISCOSITY AND EXHIBITING A HIGH DEGREE OF DETERGENCY WHICH CONSISTS ESSENTIALLY OF A MINERAL OIL BASE STOCK HAVING COMBINED THEREIN ABOUT 0.05% TO ABOUT 10% BY WEIGHT OF A COPOLYMER OF A MALEATE ESTER CONTAINING FROM 10 TO 16 CARBON ATOMS IN THE ESTER PORTION THEREOF AND VINYL ACETATE, FROM ABOUT 0.2% TO 3.0% BY WEIGHT OF A DETERGENT INHIBITOR SELECTED FROM THE CLASS CONSISTING OF METAL SALTS OF ALKYLATED PHENOL SULFIDES AND REACTION PRODUCTS OF METAL SALTS OF ALKYLATED PHENOL SULFIDE, AND A PHOSPHORUS SULFIDE, AND FROM ABOUT 0.01% TO 1.0% BY WEIGHT OF A COMPATIBILITY IMPROVER OF THE CLASS CONSISTING OF DIETHYLENE GLYCOL MONOETHYL ETHER, METHOXY TRIGLYCOL, AND DIMETHOXY TETRAETHYLENE GLYCOL.
Claim 2
Dependent Claim
122 words
A NON- TURBID LUBRICATING OIL BLEND HAVING A HIGH VISCOSITY AND EXHIBITING A HIGH DEGREE OF DETERGENCY WHICH CONSISTS ESSENTIALLY OF A MINERAL OIL BASE STOCK HAVING COMBINED THEREIN ABOUT 0.05% TO ABOUT 10% BY WEIGHT OF A COPOLYMER OF A MALEATE ESTER CONTAINING FROM 10 TO 16 CARBON ATOMS IN THE ESTER PORTION THEREOF AND VINYL ACETATE, FROM ABOUT 0.2% TO 3.0% BY WEIGHT OF A DETERGENT INHIBITOR SELECTED FROM THE CLASS CONSISTING OF METAL SALTS OF ALKYLATED PHENOL SULFIDES AND REACTION PRODUCTS OF METAL SALTS OF ALKYLATED PHENOL SULFIDE, AND A PHOSPHORUS SULFIDE, AND FROM ABOUT 0.01% TO 1.0% BY WEIGHT OF A COMPATIBILITY IMPROVER OF THE CLASS CONSISTING OF DIETHYLENE GLYCOL MONOETHYL ETHER, METHOXY TRIGLYCOL, AND DIMETHOXY TETRAETHYLENE GLYCOL.
References Cited (Backward Citations)
US2123641A
Cited
US2091627A
Cited
US2122593A
Cited
US2338522A
Cited
US2281623A
Cited
US2370080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |