US2534309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for internal-combustion engines
Assignee: Hercules Powder Co
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Filing: 1947-11-06
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Granted: 1950-12-19
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Expires: 1967-11-06
Abstract
No abstract record available.
Inventors
- 👤 Donald H Sheffield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:02
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/1811
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
21 words
A GASOLINE FUEL CONTAINING FROM ABOUT 0.05% TO ABOUT 90% BY WEIGHT, BASED ON THE TOTAL COMPOSITION, OF AN A,A-DIALKYLARYLMETHYL HYDROPEROXIDE.
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) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |