Patent US2254898A successfully refreshed from Google Patents.
US2809936A
Expired / Lapsed
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Oleic acid esters of aryloxy alcohols and lubricant compositions containing the same
Assignee: Gulf Research and Development Co
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Filing: 1952-12-31
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Granted: 1957-10-15
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Expires: 1972-12-31
Abstract
No abstract record available.
Inventors
- 👤 Richard J Neely
- 👤 Albert G Rocchini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:20
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07C; C07C69/00; C07C69/52; C07C69/533; C07C69/58; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A LUBRICANT COMPOSITION COMPRISING A MINERAL LUBRICATING OIL AND THE ESTER 1-PHENOXY-2-PROPYL OLEATE, THE AMOUNT OF SAID ESTER BEING SUFFICIENT TO PROVIDE A LUBRICANT COMPOSITION HAVING A VISCOSITY INDEX SUPERIOR TO THE VISCOSITY INDEX OF SAID MINERAL OIL.
Claim 2
Dependent Claim
38 words
A LUBRICANT COMPOSITION COMPRISING A MINERAL LUBRICATING OIL AND THE ESTER 1-PHENOXY-2-PROPYL OLEATE, THE AMOUNT OF SAID ESTER BEING SUFFICIENT TO PROVIDE A LUBRICANT COMPOSITION HAVING A VISCOSITY INDEX SUPERIOR TO THE VISCOSITY INDEX OF SAID MINERAL OIL.
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) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |