Patent US2513454A successfully refreshed from Google Patents.
US2404340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of high antiknock fuel
Assignee: Universal Oil Products Co
•
Filing: 1945-07-19
•
Granted: 1946-07-16
•
Expires: 1965-07-19
Abstract
No abstract record available.
Inventors
- 👤 Gordon B Zimmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:39
CPC Classifications
C; C07; C07C; C07C15/00; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/18; C07C5/00; C07C5/22; C07C5/2206; C07C9/00; C07C9/14; C07C9/16; C07C2521/00; C07C2521/06; C07C2521/08; C07C2527/00; C07C2527/02; C07C2527/053; C07C2527/054; C07C2527/14; C07C2527/16; C07C2527/167; C07C2527/173
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-07-15 | 1950-01-14 | 1950-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-07-15 | 1954-01-14 | 1954-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-07-15 | 1958-01-14 | 1958-07-16 | $7700.00 | Window Closed / Lapsed |