US2522696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic conversion of naphtha for the production of high antiknock gasoline
Assignee: Sinclair Refining Co
•
Filing: 1947-06-27
•
Granted: 1950-09-19
•
Expires: 1967-06-27
Abstract
No abstract record available.
Inventors
- 👤 Kenneth M Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:05
CPC Classifications
C; C10; C10G; C10G67/00; C10G67/02; C10G67/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2202401A
Cited
US2241430A
Cited
US2292677A
Cited
US2289716A
Cited
US2389176A
Cited
US2407492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |