US2692858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Castor oil lubricating composition
Assignee: CC Wakefield and Co Ltd
•
Filing: 1951-04-17
•
Granted: 1954-10-26
•
Expires: 1971-04-17
Abstract
No abstract record available.
Inventors
- 👤 Evans Elliott Alfred
- 👤 Elliott John Scotchford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:07
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0092; C10; C10M; C10M1/00; C10M1/08; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/16; C10M2207/40; C10M2207/402; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/086; C10M2219/087; C10M2219/089; C10M2219/10; C10M2219/104; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/047; C10N; C10N2010/00; C10N2010/04; C10N2010/08; C10N2010/10; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF CASTOR OIL IN WHICH IS INCORPORATED A PROPORTION OF FROM 0.05% TO 2.0% OF A METALLIC ORGANIC COMPOUND SOLUBLE IN CASTOR OIL AND SELECTED FROM THE GROUP CONSISTING OF TIN AND ANTIMONY SALTS OF ALIPHATIC MONOCARBOXYLIC ACIDS HAVING 12 TO 18 CARBON ATOMS, ORGANIC SULPHONIC ACIDS, NAPHTHENIC ACIDS, AND PHENOL THIOETHERS AND A PROPORTION OF FROM 0.1% TO 5.0% OF AN AROMATIC SECONDARY AMINE CONTAINING AT LEAST THREE CYCLIC NUCLEI, AT LEAST TWO OF WHICH NUCLEI ARE AROMATIC NUCLEI ATTACHED DIRECTLY TO THE NITROGEN ATOM.
Claim 2
Dependent Claim
93 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF CASTOR OIL IN WHICH IS INCORPORATED A PROPORTION OF FROM 0.05% TO 2.0% OF A METALLIC ORGANIC COMPOUND SOLUBLE IN CASTOR OIL AND SELECTED FROM THE GROUP CONSISTING OF TIN AND ANTIMONY SALTS OF ALIPHATIC MONOCARBOXYLIC ACIDS HAVING 12 TO 18 CARBON ATOMS, ORGANIC SULPHONIC ACIDS, NAPHTHENIC ACIDS, AND PHENOL THIOETHERS AND A PROPORTION OF FROM 0.1% TO 5.0% OF AN AROMATIC SECONDARY AMINE CONTAINING AT LEAST THREE CYCLIC NUCLEI, AT LEAST TWO OF WHICH NUCLEI ARE AROMATIC NUCLEI ATTACHED DIRECTLY TO THE NITROGEN ATOM.
References Cited (Backward Citations)
US1163856A
Cited
US1594983A
Cited
US2410652A
Cited
US2440530A
Cited
US2472503A
Cited
GB616881A
Cited
US2551124A
Cited
US2579038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-25 | 1958-04-26 | 1958-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-25 | 1962-04-26 | 1962-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-25 | 1966-04-26 | 1966-10-26 | $7700.00 | Window Closed / Lapsed |