US3436347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overbased metal sulfonate complexes and mineral oil compositions containing the same
Assignee: Mobil Oil AS
•
Filing: 1963-05-23
•
Granted: 1969-04-01
•
Expires: 1983-05-23
Abstract
No abstract record available.
Inventors
- 👤 Ferdinand P Otto
- 👤 Richard S Herd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:06
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/20; C10M159/24; C10M2219/00; C10M2219/04; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A DIESEL MINERAL LUBRICATING OIL CONTAINING A MINOR PROPORTION, SUFFICIENT TO IMPROVE THE ANTI-WEAR CHARACTERISTICS, INCREASE THE HIGH TEMPERATURE OXIDATION STABILITY AND INHIBIT THE DEPOSIT FORMING CHARACTERISTICS THEREOF, OF AN OIL-SOLUBLE LIQUID, METAL FORMATE-OVERBASED METAL SULFONATE COMPLEX REACTION PRODUCT, THE METAL COMPONENT OF WHICH IS SELECTED FROM THE GROUPS CONSISTING OF BARIUM, CALCIUM AND STRONTIUM AND WHICH POSSESSES A METAL CONTENT AT LEAST 200 PERCENT HIGHER THAN THAT OF THE CORRESPONDING NORMAL METAL SULFONATE SALT, OBTAINED BY REACTING IN LIQUID SOLVENT A METAL CARBONATE-OVERBASED METAL SULFONATE, THE METAL COMPONENT OF WHICH IS SELECTED FROM THE GROUPS CONSISTING OF BARIUM, CALCIUM AND STRONTIUM AND WHICH POSSESSES A METAL CONTENT AT LEAST 200 PERCENT HIGHER THAN THAT OF THE CORRESPONDING NORMAL METAL SULFONATE SALT, WITH FORMIC ACID IN A PROPORTION SUFFICIENT TO SUBSTANTIALLY COMPLETELY CONVERT THE METAL CARBONATE COMPONENT OF SAID METAL CARBONATE-OVERBASED METAL SULFONATE COMPLEX TO METAL FORMATE.
Claim 2
Dependent Claim
49 words
THE DIESEL MINERAL LUBRICATING OIL COMPOSITION OF CLAIM 20, WHICH ALSO CONTAINS A SMALL AMOUNT OF A SULFURIZED CALCIUM PHENATE-CALCIUM CARBONATE COMPLEX WHEREIN THE AMOUNT OF SAID COMPLEX IN ADMIXTURE WITH THE METAL FORMATE-OVERBASED METAL SULFONATE COMPLEX IN A LUBRICATING OIL IS SUFFICIENT TO DECREASE THE FORMATION OF DEPOSITS.
References Cited (Backward Citations)
US2763615A
Cited
US2762773A
Cited
GB776455A
Cited
US2956018A
Cited
US3027325A
Cited
US2856362A
Cited
US3036971A
Cited
US3242079A
Cited
US3178368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |