US3376223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urea containing grease compositions
Assignee: Chevron USA Inc
•
Filing: 1966-09-28
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Granted: 1968-04-02
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Expires: 1986-09-28
Abstract
No abstract record available.
Inventors
- 👤 Dean W Criddle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:13
CPC Classifications
C; C10; C10M; C10M123/00; C10M123/02; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/124; C10M2207/125; C10M2207/129; C10M2215/00; C10M2215/10; C10M2215/102; C10N; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A GREASE COMPOSITION HAVING A HYDROCARBONACEOUS OIL OF LUBRICATING VISCOSITY AND FROM 10 TO 30 WEIGHT PERCENT OF A GREASE THICKENER COMPRISING A REACTION PRODUCT OF A FATTY ACID OF FROM 14 TO 20 CARBON ATOMS, CALCIUM ACETATE AND UREA, WHEREIN THE MOLE RATIO OF FATTY ACID TO CALCIUM ACETATE IS 1:1-2 AND OF FATTY ACID TO UREA IS 1:051.5 BY SHEARING AT TEMPERATURE AT LEAST 275*F. AND NOT IN EXCESS OF 450*F.
Claim 2
Dependent Claim
73 words
A GREASE COMPOSITION HAVING A HYDROCARBONACEOUS OIL OF LUBRICATING VISCOSITY AND FROM 10 TO 30 WEIGHT PERCENT OF A GREASE THICKENER COMPRISING A REACTION PRODUCT OF A FATTY ACID OF FROM 14 TO 20 CARBON ATOMS, CALCIUM ACETATE AND UREA, WHEREIN THE MOLE RATIO OF FATTY ACID TO CALCIUM ACETATE IS 1:1-2 AND OF FATTY ACID TO UREA IS 1:051.5 BY SHEARING AT TEMPERATURE AT LEAST 275*F. AND NOT IN EXCESS OF 450*F.
References Cited (Backward Citations)
US2595556A
Cited
US3278426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |