US3135807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of methyl t-butyl ether
Assignee: Standard Oil Co
•
Filing: 1960-12-30
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Granted: 1964-06-02
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Expires: 1980-12-30
Abstract
No abstract record available.
Inventors
- 👤 Grasselli Robert
- 👤 Jr Theodore B Selover
- 👤 James L Caliahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:00
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/185; C10L1/1852; B; B01; B01J; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J27/19; C07; C07C; C07C41/00; C07C41/01; C07C41/05; C07C41/06; C10L1/02; C10L1/023
Claims Analysis
Total Claims: 0
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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) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |