US2798798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel oil compositions
Assignee: Armour and Co
•
Filing: 1955-10-03
•
Granted: 1957-07-09
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Expires: 1975-10-03
Abstract
No abstract record available.
Inventors
- 👤 Byron E Marsh
- 👤 Elliot N Schubert
- 👤 Richard L Betcher
- 👤 Brow Paul L Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:28
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
AN IMPROVED FUEL OIL CONTAINING AS AN ADDITIVE A MINOR AMOUNT, BETWEEN ABOUT 0.00025 AND ABOUT 2 WEIGHT PERCENT, OF A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
25 words
AN IMPROVED FUEL OIL CONTAINING AS AN ADDITIVE A MINOR AMOUNT, BETWEEN ABOUT 0.00025 AND ABOUT 2 WEIGHT PERCENT, OF A COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
US1560633A
Cited
GB269840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |