US2707172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized mineral oil lubricant compositions
Assignee: Gulf Oil Corp
•
Filing: 1949-06-16
•
Granted: 1955-04-26
•
Expires: 1969-06-16
Abstract
No abstract record available.
Inventors
- 👤 Troy L Cantrell
- 👤 Herschel G Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:15
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10N; C10N2040/00; C10N2040/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR AMOUNT OF A MINERAL LUBRICATION OIL AND MINOR AMOUNTS, IN A TOTAL OF FROM 0.01 TO 1 PERCENT BY WEIGHT OF SAID OIL OF: (1) 2.6-DITERTIARYBUTYL-4-METHYL PHENOL; AND (2) A NON-RESINOUS CONDENSATION PRODUCT OF 1 MOL OF PARATETRAMETHYLBUTYL PHENOL, 4 MOLS OF N-DIMETHLANILINE AND 4 MOLS OF FORMALDEHYDE, THE CONDENSATION OF SAID PRODUCT HAVING BEEN CARRIED OUT IN THE PRESENCE OF FROM 5 TO 10 PERCENT BY WEIGHT ON THE RECTANTS OF AN ACTIVATED CLAY CATALYST AT A TEMPERATURE OF FROM 150* TO 300* F. TO CONDENSE TOGETHER THE THREE REACTANTS; THE AMOUNTS OF (1) AND (2) WITH RESPECT TO EACH OTHER BEING IN A WEIGHT RATIO RANGING FROM 1:4 TO 4:1
Claim 2
Dependent Claim
118 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR AMOUNT OF A MINERAL LUBRICATION OIL AND MINOR AMOUNTS, IN A TOTAL OF FROM 0.01 TO 1 PERCENT BY WEIGHT OF SAID OIL OF: (1) 2.6-DITERTIARYBUTYL-4-METHYL PHENOL; AND (2) A NON-RESINOUS CONDENSATION PRODUCT OF 1 MOL OF PARATETRAMETHYLBUTYL PHENOL, 4 MOLS OF N-DIMETHLANILINE AND 4 MOLS OF FORMALDEHYDE, THE CONDENSATION OF SAID PRODUCT HAVING BEEN CARRIED OUT IN THE PRESENCE OF FROM 5 TO 10 PERCENT BY WEIGHT ON THE RECTANTS OF AN ACTIVATED CLAY CATALYST AT A TEMPERATURE OF FROM 150* TO 300* F. TO CONDENSE TOGETHER THE THREE REACTANTS; THE AMOUNTS OF (1) AND (2) WITH RESPECT TO EACH OTHER BEING IN A WEIGHT RATIO RANGING FROM 1:4 TO 4:1
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) | 1958-04-25 | 1958-10-25 | 1959-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-25 | 1962-10-25 | 1963-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-25 | 1966-10-25 | 1967-04-26 | $7700.00 | Window Closed / Lapsed |