US2603601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Addition agents and mineral oil lubricant compositions containing the same
Assignee: Gulf Oil Corp
•
Filing: 1948-07-06
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Granted: 1952-07-15
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Expires: 1968-07-06
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 10:40
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C10; C10M; C10M1/00; C10M1/08; C10M2223/00; C10M2223/12; C10M2225/00; C10M2225/04; C10N; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
THE PROCESS OF PREPARING AN IMPROVEMENT AGENT FOR MINERAL OIL LUBRICANTS WHICH COMPRISES HEATING AN ESSENTIALLY PARAFFINIC BASE LUBRICATING OIL WITH ANHYDROUS ALUMINUM CHLORIDE AT A TEMPERATURE OF FROM 150* TO 300* F., REMOVING ALUMINUM CHLORIDE FROM THE REACTION PRODUCT, AND REACTING SAID PRODUCT AND FROM 10 TO 75 PER CENT BY WEIGHT OF ITS MIXTURE WITH SAID PRODUCT OF AN ALKYLATED PHENYL PHOSPHITE WITH PHOSPHORUS PENTASULFIIDE AT AN ELEVATED TEMPERATURE NOT BELOW 300* F. AND NOT IN EXCESS OF THE MINIMUM CRACKING TEMPERATURE OF SAID PRODUCT TO INCORPORATE PHOSPHORUS AND SULFUR THEREIN.
Claim 2
Dependent Claim
93 words
THE PROCESS OF PREPARING AN IMPROVEMENT AGENT FOR MINERAL OIL LUBRICANTS WHICH COMPRISES HEATING AN ESSENTIALLY PARAFFINIC BASE LUBRICATING OIL WITH ANHYDROUS ALUMINUM CHLORIDE AT A TEMPERATURE OF FROM 150* TO 300* F., REMOVING ALUMINUM CHLORIDE FROM THE REACTION PRODUCT, AND REACTING SAID PRODUCT AND FROM 10 TO 75 PER CENT BY WEIGHT OF ITS MIXTURE WITH SAID PRODUCT OF AN ALKYLATED PHENYL PHOSPHITE WITH PHOSPHORUS PENTASULFIIDE AT AN ELEVATED TEMPERATURE NOT BELOW 300* F. AND NOT IN EXCESS OF THE MINIMUM CRACKING TEMPERATURE OF SAID PRODUCT TO INCORPORATE PHOSPHORUS AND SULFUR THEREIN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-15 | 1956-01-14 | 1956-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-15 | 1960-01-14 | 1960-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-15 | 1964-01-14 | 1964-07-15 | $7700.00 | Window Closed / Lapsed |