US2992082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-sludging hydrocarbon fuel oils
Assignee: Eastman Kodak Co
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Filing: 1958-06-24
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Granted: 1961-07-11
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Expires: 1978-06-24
Abstract
No abstract record available.
Inventors
- 👤 James C Ownby
- 👤 Herman E Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:04
CPC Classifications
C; C07; C07H; C07H13/00; C07H13/02; C07H13/04; C07H13/06; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/19; C10L1/191
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A HYDROCARBON FUEL OIL CONTAINING 0.001% TO 0.1% BY WEIGHT OF AN ESTER SELECTED FROM THE GROUP CONSISTING OF SUCROSE MONOESTERS AND SUCROSE DIESTERS WHEREIN THE SUCROSE IS ESTERIFIED WITH AN ALPHATIC CARBOXYLIC ACID HAVING AT LEAST 8 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF ALKYL CARBOXYLIC ACIDS AND ALKENYL CARBOXYLIC ACIDS.
Claim 2
Dependent Claim
53 words
A HYDROCARBON FUEL OIL CONTAINING 0.001% TO 0.1% BY WEIGHT OF AN ESTER SELECTED FROM THE GROUP CONSISTING OF SUCROSE MONOESTERS AND SUCROSE DIESTERS WHEREIN THE SUCROSE IS ESTERIFIED WITH AN ALPHATIC CARBOXYLIC ACID HAVING AT LEAST 8 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF ALKYL CARBOXYLIC ACIDS AND ALKENYL CARBOXYLIC ACIDS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |