US2623853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grease compositions
Assignee: Shell Development Co
•
Filing: 1951-04-06
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Granted: 1952-12-30
•
Expires: 1971-04-06
Abstract
No abstract record available.
Inventors
- 👤 Fred H Stross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:25
CPC Classifications
C; C10; C10M; C10M5/00; C10M2201/00; C10M2201/14; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/026; C10M2205/14; C10M2205/17; C10M2205/173; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/284; C10M2207/285; C10M2207/287; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/082; C10M2209/10; C10M2209/103; C10M2209/105; C10M2209/106; C10M2209/107; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/06; C10M2215/08; C10M2215/082; C10M2215/12; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2221/00; C10M2221/04; C10M2221/043; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/047; C10M2223/06; C10M2223/061; C10M2223/065; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10N; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/10; C10N2060/00; C10N2060/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A GREASE COMPOSITION COMPRISING AN ORGANIC LUBRICATING LIQUID HAVING COMPLETELY DISPERSED THEREIN A GREASE-FORMING AMOUNT OF A CLAY HAVING A BASE EXCHANGE CAPACITY OF AT LEAST 25, THE COLLOIDAL PARTCLES OF SAID CLAY HAVING ABSORBED ON THE SURFACES THEREOF FROM ABOUT 25% TO ABOUT 100%, BASED ON THE WEIGHT OF THE CLAY, OF A CATIONIC HYDROPHOBIC SURFACE-ACTIVE AGENT, THE NITROGEN ATOMS OF THE SAID AGENT BEING SUBSTANTIALLY ONLY IN THE TRIVALENT STATE.
Claim 2
Dependent Claim
72 words
A GREASE COMPOSITION COMPRISING AN ORGANIC LUBRICATING LIQUID HAVING COMPLETELY DISPERSED THEREIN A GREASE-FORMING AMOUNT OF A CLAY HAVING A BASE EXCHANGE CAPACITY OF AT LEAST 25, THE COLLOIDAL PARTCLES OF SAID CLAY HAVING ABSORBED ON THE SURFACES THEREOF FROM ABOUT 25% TO ABOUT 100%, BASED ON THE WEIGHT OF THE CLAY, OF A CATIONIC HYDROPHOBIC SURFACE-ACTIVE AGENT, THE NITROGEN ATOMS OF THE SAID AGENT BEING SUBSTANTIALLY ONLY IN THE TRIVALENT STATE.
References Cited (Backward Citations)
US2531440A
Cited
US2554222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |