US4282392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha-olefin oligomer synthetic lubricant
Assignee: Chevron USA Inc
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Filing: 1978-06-19
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Granted: 1981-08-04
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Expires: 1998-06-19
Abstract
Abstract An alpha-olefin oligomer synthetic lubricant having an improved viscosity-volatility relationship is prepared from an alpha-olefin such as 1-decene.
Inventors
- 👤 Barrett L. Cupples
- 👤 William J. Heilman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:34
CPC Classifications
C; C10; C10M; C10M3/00; C10M107/00; C10M107/02; C10M107/10; C10M2205/00; C10M2205/02; C10M2205/028; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/08; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
77 words
A lubricating oil comprising a hydrogenated mixture of normal 1-decene oligomers having a 210° F. viscosity between about 5.4 cs. and about 6.6 cs. and a -40° F. viscosity of at least about 5,500 cs. and comprising a maximum of about two percent dimer, a trimer to tetramer ratio no higher than about one to one and at least about 15 percent pentamer, and said trimer fraction having a maximum 210° F. viscosity of about 2,250 cs.
Claim 2
Dependent Claim
77 words
A lubricating oil comprising a hydrogenated mixture of normal 1-decene oligomers having a 210° F. viscosity between about 5.4 cs. and about 6.6 cs. and a -40° F. viscosity of at least about 5,500 cs. and comprising a maximum of about two percent dimer, a trimer to tetramer ratio no higher than about one to one and at least about 15 percent pentamer, and said trimer fraction having a maximum 210° F. viscosity of about 2,250 cs.
Claim 3
Dependent Claim
21 words
A lubricating oil in accordance with claim 1 having a 210° F. viscosity between about 5.4 cs. and about 6.3 cs.
Claim 4
Dependent Claim
21 words
A lubricating oil in accordance with claim 1 having a 210° F. viscosity between about 5.4 cs. and about 6.0 cs.
Claim 5
Dependent Claim
23 words
A lubricating oil in accordance with claim 1 in which the trimer fraction has a maximum -40° F. viscosity of about 2,100 cs.
Claim 6
Dependent Claim
21 words
A lubricating oil in accordance with claim 1 in which the said -40° F. viscosity is at least about 6,500 cs.
Claim 7
Dependent Claim
26 words
A lubricating oil in accordance with claim 1 in which the said mixture of 1-decene oligomers has an average molecular weight of at least about 500.
References Cited (Backward Citations)
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US3725498A
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US3382291A
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US3763244A
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US3947507A
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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) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |