US2701803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic lubricants
Assignee: ExxonMobil Oil Corp
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Filing: 1948-10-20
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Granted: 1955-02-08
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Expires: 1968-10-20
Abstract
No abstract record available.
Inventors
- 👤 Bernard A Orkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:25
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0898; C07F7/18; C07F7/1804
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
121 words
A COMPOUND HAVING THE FORMULA RNSI(TR'')4-N, WHEREIN R AND R'' ARE RADICALS SELECTED FROM THE GROUP CONSISTING OF ALKYL, THIENYL AND BENZYL RADICALS, T IS A DIVALENT ATOMS SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR ATOMS, AND N IS AN IONTEGER VARYING BETWEEN ONE AND THREE, IN WHICH THE TOTAL NUMBER OF CARBON ATOMS PULS HETEROCYCLIC ATOMS IN EACH MOLECULE VARIES BETWEEN 26 ATOMS AND 38 ATOMS, THERE BEING NOT MORE THAN 3 HETEROCYCLIC ATOMS PER MOLECULE, AND IN WHICH AT LEAST ONE OF SAID RADICALS R AND R'' IS AN ALKYL RADICAL; SAID COMPOUND BEING A LUBRICANT HAVING R RELATIVELY LOW POUR POINT A HIGH VISOCITY INDEX, A VISOCITY IN THE LUBRICATING OIL RANGE, AND RESISTANCE TO HYDROLYSIS.
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) | 1958-02-07 | 1958-08-09 | 1959-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-07 | 1962-08-09 | 1963-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-07 | 1966-08-09 | 1967-02-08 | $7700.00 | Window Closed / Lapsed |