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Patent US2668848A successfully refreshed from Google Patents.
US2668848A
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Ester-type synthetic lubricants
Assignee: ExxonMobil Oil Corp
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Filing: 1949-10-07
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Granted: 1954-02-09
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Expires: 1969-10-07
Abstract
No abstract record available.
Inventors
- 👤 Martin B Neuworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:09
CPC Classifications
C; C10; C10M; C10M3/00; C10M2207/00; C10M2207/28; C10M2207/30; C10M2207/304; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/11; C10M2209/112; C10M2221/00; C10M2221/04; C10M2221/043; C10N; C10N2040/00; C10N2040/02; C10N2040/14; C10N2040/16; C10N2040/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
THE NON-RESINOUS REACTION PRONDUCT OBTAINED BY REACTING AN ADIPIC ACID MONOESTER HAVING THE FORMULA, ROOC(CH2)4COOH, WHEREIN R IS A BRANCHED-CHAIN ALIPHATIC RADICAL CONTAINING BETWEEN ABOUT 6 AND ABOUT 20 CARBON ATOMS, WITH A GLYCOL REACTANT SELECTED FROM THE GROUP CONSISTING OF AN ETHYLENE GLYCOL HAVING THE FORMULA, H(OCH2CH2) NOH, WHEREIN N IS AN INTEGER VARYING BETWEEN ONE AND SIX, AND THIODIGLYCOL, IN A MOLAR PROPORTION OF ABOUT 2:1, RESPECTIVELY.
Claim 2
Dependent Claim
69 words
THE NON-RESINOUS REACTION PRONDUCT OBTAINED BY REACTING AN ADIPIC ACID MONOESTER HAVING THE FORMULA, ROOC(CH2)4COOH, WHEREIN R IS A BRANCHED-CHAIN ALIPHATIC RADICAL CONTAINING BETWEEN ABOUT 6 AND ABOUT 20 CARBON ATOMS, WITH A GLYCOL REACTANT SELECTED FROM THE GROUP CONSISTING OF AN ETHYLENE GLYCOL HAVING THE FORMULA, H(OCH2CH2) NOH, WHEREIN N IS AN INTEGER VARYING BETWEEN ONE AND SIX, AND THIODIGLYCOL, IN A MOLAR PROPORTION OF ABOUT 2:1, RESPECTIVELY.
References Cited (Backward Citations)
US2356586A
Cited
US2363045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |