Patent US2583435A successfully refreshed from Google Patents.
US2583435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-temperature grease
Assignee: Standard Oil Development Co
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Filing: 1949-06-23
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Granted: 1952-01-22
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Expires: 1969-06-23
Abstract
No abstract record available.
Inventors
- 👤 Arnold J Morway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:11
CPC Classifications
C; C10; C10M; C10M5/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/129; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2215/00; C10M2215/16; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
200 words
A PROCESS FOR THE MANUFACTURE OF A MIXED BASE LUBRICATING GREASE COMPOSITION WHICH COMPRISES ADMIXING WITH A MINERAL BASE LUBRICATING OIL FROM ABOUT 2 TO 4% BY WEIGHT OF AN UNSATURATED ALIPHATIC MONOBASIC ACIDOGENIC MATERIAL HAVING FROM 3 TO 4 CARBON ATOMS SELECTED FROM THE CLASS CONSISTING OF ACRYLIC ACID, METHACRYLIC ACID, CROTONIC ACID, AND THEIR NITRILES, ADDING TO SAID MIXTURE FROM 1 TO 3% OF AN ALKALI METAL HYDROXIDE IN AQUEOUS SOLUTION TO CONVERT SAID ACIDOGENIC MATERIAL TO THE ALKALI METAL SALT, STIRRING THE MIXTURE UNTIL THE SAID ACIDOGENIC MATERIAL IS SUBSTANTIALLY COMPLETELY NEUTRALIZED THEREAFTER ADDING FROM ABOUT 10 TO 20% BY WEIGHT OF A HIGH MOLECULAR WEIGHT SATURATED FATTY ACID IN ADMIXTURE WITH ADDITIONAL MINERAL OIL, RAISING THE TEMPERATURE OF THE RESULTING MIXTURE TO ONE WITHIN A RANGE OF FROM ABOUT 120* F. TO 170* F., ADDING TO THE SAID HEATED MIXTURE A MINERAL OIL SLURRY CONTAINING ABOUT 1 TO 3% BY WEIGHT OF AN ALKALINE EARTH METAL HYDROXIDE TO NEUTRALIZE SAID HIGH MOLECULAR WEIGHT SATURATED FATTY ACID, RAISING THE TEMPERATURE OF THE RESULTING MIXTURE TO ONE WITHIN A RANGE OF FROM ABOUT 350* F. TO 450* F., THEREBY DEHYDRATING SAID MIXTURE, AND COOLING THE RESULTING GREASE COMPOSITION.
Claim 2
Dependent Claim
200 words
A PROCESS FOR THE MANUFACTURE OF A MIXED BASE LUBRICATING GREASE COMPOSITION WHICH COMPRISES ADMIXING WITH A MINERAL BASE LUBRICATING OIL FROM ABOUT 2 TO 4% BY WEIGHT OF AN UNSATURATED ALIPHATIC MONOBASIC ACIDOGENIC MATERIAL HAVING FROM 3 TO 4 CARBON ATOMS SELECTED FROM THE CLASS CONSISTING OF ACRYLIC ACID, METHACRYLIC ACID, CROTONIC ACID, AND THEIR NITRILES, ADDING TO SAID MIXTURE FROM 1 TO 3% OF AN ALKALI METAL HYDROXIDE IN AQUEOUS SOLUTION TO CONVERT SAID ACIDOGENIC MATERIAL TO THE ALKALI METAL SALT, STIRRING THE MIXTURE UNTIL THE SAID ACIDOGENIC MATERIAL IS SUBSTANTIALLY COMPLETELY NEUTRALIZED THEREAFTER ADDING FROM ABOUT 10 TO 20% BY WEIGHT OF A HIGH MOLECULAR WEIGHT SATURATED FATTY ACID IN ADMIXTURE WITH ADDITIONAL MINERAL OIL, RAISING THE TEMPERATURE OF THE RESULTING MIXTURE TO ONE WITHIN A RANGE OF FROM ABOUT 120* F. TO 170* F., ADDING TO THE SAID HEATED MIXTURE A MINERAL OIL SLURRY CONTAINING ABOUT 1 TO 3% BY WEIGHT OF AN ALKALINE EARTH METAL HYDROXIDE TO NEUTRALIZE SAID HIGH MOLECULAR WEIGHT SATURATED FATTY ACID, RAISING THE TEMPERATURE OF THE RESULTING MIXTURE TO ONE WITHIN A RANGE OF FROM ABOUT 350* F. TO 450* F., THEREBY DEHYDRATING SAID MIXTURE, AND COOLING THE RESULTING GREASE COMPOSITION.
References Cited (Backward Citations)
US2468099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |