US4080180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methyl 1,1,3,3-tetramethylbutyl ether and admixture thereof with diisobutylene
Assignee: Sunoco Inc R&M
•
Filing: 1976-02-17
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Granted: 1978-03-21
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Expires: 1996-02-17
Abstract
Abstract The compound methyl 1,1,3,3-tetramethylbutyl ether having the formula ##STR1##
Inventors
- 👤 James Edward Lyons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:54
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/185; C10L1/1852; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06; C09; C09D; C09D7/00; C09D7/40; C09D7/47
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
9 words
The compound methyl 1,1,3,3-tetramethylbutyl ether having the formula ##STR4##
Claim 2
Dependent Claim
9 words
The compound methyl 1,1,3,3-tetramethylbutyl ether having the formula ##STR4##
Claim 3
Dependent Claim
34 words
High octane fuel additive for automotive fuels comprising a mixture of methyl 1,1,3,3-tetramethylbutyl ether and diisobutylene in ratios of 20 to 98 parts by volume of ether to 80 to 2 parts of diisobutylene.
Claim 4
Dependent Claim
34 words
High octane fuel additive for automotive fuels comprising a mixture of methyl 1,1,3,3-tetramethylbutyl ether and diisobutylene in ratios of 20 to 98 parts by volume of ether to 80 to 2 parts of diisobutylene.
References Cited (Backward Citations)
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Cited
US2720547A
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US2922822A
Cited
US3119766A
Cited
US3578609A
Cited
US3904384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |