US2764547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion resistant lubricant composition
Assignee: Standard Oil Co
•
Filing: 1953-03-30
•
Granted: 1956-09-25
•
Expires: 1973-03-30
Abstract
No abstract record available.
Inventors
- 👤 Ellis K Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:17
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10M; C10M1/00; C10M1/08; C10L1/143; C10L1/24; C10L1/2443; C10L1/2456; C10L1/26; C10L1/2691; C10M2201/00; C10M2201/04; C10M2201/043; C10M2205/00; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2040/00; C10N2040/14; C10N2040/16; C10N2040/17; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A COMPOSITION COMPRISING A MAJOR PROPORTION OF AN OIL CONTAINING A COMPOUND NORMALLY CORROSIVE TO SILVER, SELECTED FROM THE GROUP CONSISTING OF ELEMENTAL SULFUR, A SULFUR- CONTAINING ORGANIC COMPOUND AND MIXTURES THEREOF, AND FROM ABOUT 0.02% TO ABOUT 10% OF THE OILSOLUBLE REACTION PRODUCT OF 2.5-DIMERCAPTO-1,3.4-THIADIAZOLE AND AN UNSATURATED CYCLIC HYDROCARBON HAVING AT LEAST ON OLEFINIC DOUBLE BOND AND AT LEAST ABOUT SIX CARBON ATOMS, SAID THIADIAZOLE AND SAID UNSATURATED CYCLIC HYDROCARBON BEING REACTED IN THE MOLAR RATIO OF FROM 3:1 TO 1:1 AT A TEMPERATURE OF FROM ABOUT 25* C. TO ABOUT 150* C.
Claim 2
Dependent Claim
95 words
A COMPOSITION COMPRISING A MAJOR PROPORTION OF AN OIL CONTAINING A COMPOUND NORMALLY CORROSIVE TO SILVER, SELECTED FROM THE GROUP CONSISTING OF ELEMENTAL SULFUR, A SULFUR- CONTAINING ORGANIC COMPOUND AND MIXTURES THEREOF, AND FROM ABOUT 0.02% TO ABOUT 10% OF THE OILSOLUBLE REACTION PRODUCT OF 2.5-DIMERCAPTO-1,3.4-THIADIAZOLE AND AN UNSATURATED CYCLIC HYDROCARBON HAVING AT LEAST ON OLEFINIC DOUBLE BOND AND AT LEAST ABOUT SIX CARBON ATOMS, SAID THIADIAZOLE AND SAID UNSATURATED CYCLIC HYDROCARBON BEING REACTED IN THE MOLAR RATIO OF FROM 3:1 TO 1:1 AT A TEMPERATURE OF FROM ABOUT 25* C. TO ABOUT 150* C.
References Cited (Backward Citations)
US2690999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |