US2477220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Additive for motor fuels
Assignee: Union Oil Company of California
•
Filing: 1944-12-04
•
Granted: 1949-07-26
•
Expires: 1964-12-04
Abstract
No abstract record available.
Inventors
- 👤 John L Volz
- 👤 Karl J Korpl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:51
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2633; C10L1/2641; C10L1/30; C10L1/301; C10L1/305; C10L1/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1988176A
Cited
US2252675A
Cited
US2251953A
Cited
US2241243A
Cited
US2301370A
Cited
US2405560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |