US2851344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel oil compositions
Assignee: Armour and Co
•
Filing: 1955-02-02
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Granted: 1958-09-09
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Expires: 1975-02-02
Abstract
No abstract record available.
Inventors
- 👤 Byron E Marsh
- 👤 Brow Paul L Du
- 👤 Richard L Betcher
- 👤 Frederick W Smith
- 👤 Cizek Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:39
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
AN IMPROVED FUEL OIL COMPOSITION CONTAINING AS AN ADDITIVE A MINOR AMOUNT, IN THE RANGE BETWEEN ABOUT 25 PARTS PER MILLION AND 2 WEIGHT PERCENT, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF: (1) A COMPOUND OF THE FORMULA R-NH-(CH2)NNH-A-COOH WHEREIN A IS A DIVALENT HYDROCARBON RADICAL HAVING FROM 2 TO 3 CARBON ATOMS, N IS AN INTEGER OF FROM 2 TO 5, AND R IS A RADICAO OF THE GROUP CONSISTING OF: (A) ALIPHATIC HYDROCARBON RADICALS HAVING FROM 8 TO 22 CARBON ATOMS; AND (B) HYDROCARBON RADICALS AS CONTAINED IN ROSIN AND TALL OIL ACIDS; (11) AN ALKALI METAL SALT OF 1; (111) AN ALKALINE EARTH METAL SALT OF 1; (IV) A MONOAMINE SALT OF I WHEREIN THE MONOAMINE IS ONE OF THE FORMULAE RNH2, R2BH AND R3N, WHEREIN R IS A RADICAL OF THE GROUP CONSISTING OF ALIPHATIC HYDROCARBON RADICALS HAVING FROM 1 TO 22 CARBON ATOMS AND HYDROCARBON RADICALS AS CONTAINED IN ROSIN AND TALL OIL ACIDS; (V) A DIAMINE SALT OF I WHEREIN THE DIAMINE IS OF THE FORMULA
Claim 2
Dependent Claim
174 words
AN IMPROVED FUEL OIL COMPOSITION CONTAINING AS AN ADDITIVE A MINOR AMOUNT, IN THE RANGE BETWEEN ABOUT 25 PARTS PER MILLION AND 2 WEIGHT PERCENT, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF: (1) A COMPOUND OF THE FORMULA R-NH-(CH2)NNH-A-COOH WHEREIN A IS A DIVALENT HYDROCARBON RADICAL HAVING FROM 2 TO 3 CARBON ATOMS, N IS AN INTEGER OF FROM 2 TO 5, AND R IS A RADICAO OF THE GROUP CONSISTING OF: (A) ALIPHATIC HYDROCARBON RADICALS HAVING FROM 8 TO 22 CARBON ATOMS; AND (B) HYDROCARBON RADICALS AS CONTAINED IN ROSIN AND TALL OIL ACIDS; (11) AN ALKALI METAL SALT OF 1; (111) AN ALKALINE EARTH METAL SALT OF 1; (IV) A MONOAMINE SALT OF I WHEREIN THE MONOAMINE IS ONE OF THE FORMULAE RNH2, R2BH AND R3N, WHEREIN R IS A RADICAL OF THE GROUP CONSISTING OF ALIPHATIC HYDROCARBON RADICALS HAVING FROM 1 TO 22 CARBON ATOMS AND HYDROCARBON RADICALS AS CONTAINED IN ROSIN AND TALL OIL ACIDS; (V) A DIAMINE SALT OF I WHEREIN THE DIAMINE IS OF THE FORMULA
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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |