US2540534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extreme pressure grease
Assignee: Standard Oil Development Co
•
Filing: 1949-07-01
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Granted: 1951-02-06
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Expires: 1969-07-01
Abstract
No abstract record available.
Inventors
- 👤 John J Kolfenbach
- 👤 O'halloran Rosemary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:22
CPC Classifications
C; C10; C10M; C10M5/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/123; C10M2207/124; C10M2207/129; C10M2207/22; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2010/00; C10N2010/04; C10N2010/08; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/20; C10N2040/22; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
AN IMPROVED LUBRICATING GREASE COMPOSITION CONSISTING ESSENTIALLY OF A LUBRICATING OIL BASE STOCK HAVING INCORPORATED THEREIN FROM ABOUT 5 TO 20% OF AN ALKALINE EARTH METAL SULFONATE PREPARED FROM A SULFONIC ACID HAVING A MOLECULAR WEIGHT WITHIN A RANGE OF FROM 300 TO 600, FROM ABOUT 2% TO 6% BY WEIGHT OF AN ALKALINE EARTH METAL SULFONATE PREPARED FROM ALKYL SULFONIC ACID HAVING A MOLECULAR WEIGHT WITHIN A RANGE OF FROM 96 TO 166 AND ABOUT 2.5% TO 7.5%
Claim 2
Dependent Claim
79 words
AN IMPROVED LUBRICATING GREASE COMPOSITION CONSISTING ESSENTIALLY OF A LUBRICATING OIL BASE STOCK HAVING INCORPORATED THEREIN FROM ABOUT 5 TO 20% OF AN ALKALINE EARTH METAL SULFONATE PREPARED FROM A SULFONIC ACID HAVING A MOLECULAR WEIGHT WITHIN A RANGE OF FROM 300 TO 600, FROM ABOUT 2% TO 6% BY WEIGHT OF AN ALKALINE EARTH METAL SULFONATE PREPARED FROM ALKYL SULFONIC ACID HAVING A MOLECULAR WEIGHT WITHIN A RANGE OF FROM 96 TO 166 AND ABOUT 2.5% TO 7.5%
References Cited (Backward Citations)
US2444970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |