Patent US2868628A successfully refreshed from Google Patents.
US2868628A
Expired / Lapsed
US
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Stabilization of burner oils
Assignee: Universal Oil Products Co
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Filing: 1955-12-05
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Granted: 1959-01-13
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Expires: 1975-12-05
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Chenicek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:01
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
54 words
A HYDROCARBON DISTILLATE HEAVIER THAN GASOLINE NORMALLY TENDING TO UNDERGO DISCOLORATION IN STORAGE CONTAINING, AS AN INHIBITOR AGAINST SAID DISCOLORATION, FROM ABOUT 0.0001% TO ABOUT 5% BY WEIGHT OF A SALT OF A DICARBOXYLIC ACID HAVING AT LEAST 10 CARBON ATOMS AND AN N-ALKYL-1,3-DIAMINOPROPANE HAVING AN ALKYL GROUP OF AT LEAST 12 CARBON ATOMS.
Claim 2
Dependent Claim
54 words
A HYDROCARBON DISTILLATE HEAVIER THAN GASOLINE NORMALLY TENDING TO UNDERGO DISCOLORATION IN STORAGE CONTAINING, AS AN INHIBITOR AGAINST SAID DISCOLORATION, FROM ABOUT 0.0001% TO ABOUT 5% BY WEIGHT OF A SALT OF A DICARBOXYLIC ACID HAVING AT LEAST 10 CARBON ATOMS AND AN N-ALKYL-1,3-DIAMINOPROPANE HAVING AN ALKYL GROUP OF AT LEAST 12 CARBON ATOMS.
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) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |