US2698835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wax phenol-phosphorus pentoxide reaction products and petroleum oil fractions containing the same
Assignee: ExxonMobil Oil Corp
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Filing: 1950-06-29
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Granted: 1955-01-04
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Expires: 1970-06-29
Abstract
No abstract record available.
Inventors
- 👤 Ferdinand P Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:51
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/12; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2691; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/049; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
A MINERAL LUBRICATING OIL CONTAINING A MINOR PRO PORTION, SUFFICIENT TO IMPROVE THE EXTREME PRESSURE CHARACTER AND DEPRESS THE POUR POINT OF SAID OIL. OF THE PRODUCT OBTAINED FROM THE REACTION INVOLVING 1 MOL OF PHOSPHORUS PENTOXIDE AND APPROXIMATELY 3 MOLS OF WAX PHENOL AT A TEMPERATURE OF FROM ABOUT 50* C. TO ABOUT 150* C.
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) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |