US4252541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparation of ethers
Assignee: Texaco Inc
•
Filing: 1975-11-28
•
Granted: 1981-02-24
•
Expires: 1995-11-28
Abstract
Abstract Novel gasoline compositions, which are characterized by improved octane number and volatility properties, contain both methyl t-butyl ether and methyl t-amyl ether.
Inventors
- 👤 Sheldon Herbstman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:56
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/185; C10L1/1852; C10L1/02; C10L1/023
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
31 words
A gasoline composition which comprises a. 1000-2200 parts by weight of gasoline; b. 40-70 parts by weight of methyl t-butyl ether; and c. 50-90 parts by weight of methyl t-amyl ether.
Claim 2
Dependent Claim
31 words
A gasoline composition which comprises a. 1000-2200 parts by weight of gasoline; b. 40-70 parts by weight of methyl t-butyl ether; and c. 50-90 parts by weight of methyl t-amyl ether.
Claim 3
Dependent Claim
29 words
A gasoline composition as claimed in claim 1 wherein said composition includes 41 parts of methyl t-butyl ether, 59 parts of methyl t-amyl ether, and 1000 parts of gasoline.
Claim 4
Dependent Claim
22 words
A novel composition which comprises 40-70 parts by weight of methyl t-butyl ether and 50-90 parts by weight of methyl t-amyl ether.
Claim 5
Dependent Claim
22 words
A novel composition which comprises 40-70 parts by weight of methyl t-butyl ether and 50-90 parts by weight of methyl t-amyl ether.
Claim 6
Dependent Claim
29 words
A novel composition which comprises 40-70 parts by weight of methyl t-butyl ether; 50-90 parts by weight of methyl t-amyl ether; and 10-500 parts by weight of inert diluent-solvent.
Claim 7
Dependent Claim
29 words
A novel composition which comprises 40-70 parts by weight of methyl t-butyl ether; 50-90 parts by weight of methyl t-amyl ether; and 10-500 parts by weight of inert diluent-solvent.
Claim 8
Dependent Claim
16 words
A novel composition as claimed in claim 4 wherein said inert diluent-solvent is a gasoline precursor.
Claim 9
Dependent Claim
15 words
A novel composition as claimed in claim 4 wherein said inert diluent-solvent is a gasoline.
References Cited (Backward Citations)
US1423049A
Cited
US2046243A
Cited
US2132017A
Cited
US2409746A
Cited
US2952612A
Cited
US3224848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |