US2767165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Addition agents
Assignee: Gulf Oil Corp
•
Filing: 1952-07-03
•
Granted: 1956-10-16
•
Expires: 1972-07-03
Abstract
No abstract record available.
Inventors
- 👤 Herschel G Smith
- 👤 Troy L Cantrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:39
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/10; C10N2010/12; C10N2010/14; C10N2010/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
AN ADDITION AGENT FOR MINERAL OIL LUBRICANTS COMPRISING A SALT SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL SALTS AND PRIMARY ALIPHATIC AMINE SALTS, SAID PRIMARY ALIPHATIC AMINE HAVING FROM 8 TO 22 CARBON ATOMS, OF A PRODUCT PREPARED BY HEATING AN ESSENTIALLY PARAFFINIC BASE LUBRICATING OIL WITH ANHYDROUS ALUMINUM CHLORIDE AT A TEMPERATURE OF FROM 150* TO 350* F., REMOVING ALUMINUM CHLORIDE FROM THE REACTION PRODUCT, AND REACTING THE LATTER WITH PHOSPHORUS PENTASULFIDE AT A TEMPERATURE OF FROM 450* F. TO A MAXIMUM TEMPERATURE BELOW THE MINIMUM CRACKING TEMPERATURE OF SAID REACTION PRODUCT TO INCORPORATE PHOSPHORUS AND SULFUR THEREIN.
Claim 2
Dependent Claim
101 words
AN ADDITION AGENT FOR MINERAL OIL LUBRICANTS COMPRISING A SALT SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL SALTS AND PRIMARY ALIPHATIC AMINE SALTS, SAID PRIMARY ALIPHATIC AMINE HAVING FROM 8 TO 22 CARBON ATOMS, OF A PRODUCT PREPARED BY HEATING AN ESSENTIALLY PARAFFINIC BASE LUBRICATING OIL WITH ANHYDROUS ALUMINUM CHLORIDE AT A TEMPERATURE OF FROM 150* TO 350* F., REMOVING ALUMINUM CHLORIDE FROM THE REACTION PRODUCT, AND REACTING THE LATTER WITH PHOSPHORUS PENTASULFIDE AT A TEMPERATURE OF FROM 450* F. TO A MAXIMUM TEMPERATURE BELOW THE MINIMUM CRACKING TEMPERATURE OF SAID REACTION PRODUCT TO INCORPORATE PHOSPHORUS AND SULFUR THEREIN.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |