Patent US3767577A successfully refreshed from Google Patents.
US3767577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic lube stocks
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1971-08-13
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Granted: 1973-10-23
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Expires: 1991-08-13
Abstract
Abstract The present invention relates to synthetic lubricant base oil stocks having a low pour point and consisting essentially of an admixture of mono- and dialkyl benzenes, wherein the alkyl substituents are substantially similar. In particular, the alkyl substituents will contain from eight to 56 carbon atoms with no alkyl substituent containing more than five carbon atoms more or less than any other alkyl substituent. In the most preferred case, the alkyl substituents are tertiary alkyl groups of from 12 to 24 carbon atoms, with all alkyl substituents in a given case having an identical number of carbon atoms.
Inventors
- 👤 J Boggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:38
CPC Classifications
C; C10; C10M; C10M3/00; C10M2203/00; C10M2203/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
14 words
A composition in accordance with claim 1 which contains about 2.9 mol percent of
Claim 2
Dependent Claim
14 words
A composition in accordance with claim 1 which contains about 4.7 mol percent of
Claim 3
Dependent Claim
14 words
A composition in accordance with claim 1 which contains about 3.5 mol percent of
Claim 4
Dependent Claim
18 words
A composition in accordance with claim 1 which contains from about 0.6 to about 2.9 mol percent of
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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |