US2689224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction reducing additives for lubricants
Assignee: HONORARY ADVISORY COUNCIL FOR SCIENTIFIC AND INDUSTRIAL RESEARCH
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Filing: 1950-12-16
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Granted: 1954-09-14
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Expires: 1970-12-16
Abstract
No abstract record available.
Inventors
- 👤 Aurelio F Sirianni
- 👤 Ira E Puddington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:38
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/10; C10M2201/105; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/30; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/108; C10M2227/00; C10M2227/09; C10N; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A LUBRICATING COMPOSITION FOR HEAVY JOURNAL METALLIC BEARINGS OPERATING AT ELEVATED TEMPERATURES IN THE PRESENCE OF MOISTURE, COMPRISING A MINERAL OIL BASE LUBRICANT CONTAINING 0.1 TO ABOUT 1% BY WEIGHT, BASED ON THE TOTAL COMPOSITION, OF A FATTY ACID MODIFIED RESIN SELECTED FROM THE GROUP CONSISTING OF THE CONDENSATION PRODUCTS OF GLYCEROL WITH A DICARBOXYLIC ACID MATERIAL SELECTED FROM THE GROUP CONSISTING OF PHTHALIC, SUCCINIC AND MALEIC ACIDS AND THEIR ANHYDRIDES MODIFIED BY TREATMENT WITH LONG CHAIN FATTY ACIDS HAVING ABOUT 12-22 CARBON ATOMS, AND THE CONDENSATION PRODUCTS OF C12-C22 LONG CHAIN FATTY ACID ESTERS OF GLYCEROL WITH SAID DICARBOXYLIC ACID MATERIALS, SAID RESIN HAVING FREE ACIDITY TO THE EXTENT OF AN ACID NUMBER OF ABOUT 7-100 AND HAVING SUFFICIENTLY ACTIVE CARBOXYLIC GROUPS TO FORM SUBSTANTIALLY OIL-INSOLUBLE CHEMI-SORPTION PRODUCTS WITH THE METAL OF SAID BEARINGS AT THE OPERATING TEMPERATUE, SAID RESIN BEING SUBSTANTIALLY DEVOID OF FREE FATTY ACID WHICH WOULD FORM OIL-SOLUBLE SOAP WITH SAID METAL.
Claim 2
Dependent Claim
156 words
A LUBRICATING COMPOSITION FOR HEAVY JOURNAL METALLIC BEARINGS OPERATING AT ELEVATED TEMPERATURES IN THE PRESENCE OF MOISTURE, COMPRISING A MINERAL OIL BASE LUBRICANT CONTAINING 0.1 TO ABOUT 1% BY WEIGHT, BASED ON THE TOTAL COMPOSITION, OF A FATTY ACID MODIFIED RESIN SELECTED FROM THE GROUP CONSISTING OF THE CONDENSATION PRODUCTS OF GLYCEROL WITH A DICARBOXYLIC ACID MATERIAL SELECTED FROM THE GROUP CONSISTING OF PHTHALIC, SUCCINIC AND MALEIC ACIDS AND THEIR ANHYDRIDES MODIFIED BY TREATMENT WITH LONG CHAIN FATTY ACIDS HAVING ABOUT 12-22 CARBON ATOMS, AND THE CONDENSATION PRODUCTS OF C12-C22 LONG CHAIN FATTY ACID ESTERS OF GLYCEROL WITH SAID DICARBOXYLIC ACID MATERIALS, SAID RESIN HAVING FREE ACIDITY TO THE EXTENT OF AN ACID NUMBER OF ABOUT 7-100 AND HAVING SUFFICIENTLY ACTIVE CARBOXYLIC GROUPS TO FORM SUBSTANTIALLY OIL-INSOLUBLE CHEMI-SORPTION PRODUCTS WITH THE METAL OF SAID BEARINGS AT THE OPERATING TEMPERATUE, SAID RESIN BEING SUBSTANTIALLY DEVOID OF FREE FATTY ACID WHICH WOULD FORM OIL-SOLUBLE SOAP WITH SAID METAL.
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) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |