US3202491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon oil sludging inhibitor composition
Assignee: Eastman Kodak Co
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Filing: 1962-05-24
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Granted: 1965-08-24
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Expires: 1982-05-24
Abstract
No abstract record available.
Inventors
- 👤 Donald A Maxwell
- 👤 William M Gearhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:57
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C07; C07D; C07D241/00; C07D241/02; C07D241/06; C07D241/08; C10L1/221; C10L1/222; C10L1/224
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A COMPOSITION CONSISTING ESSENTIALLY OF THE MIXTURE OF (1) AN IMIDE-AMIDE REACTION PRODUCT OBTAINED BY REACTIN ETHYLENEDIAMINE TETRAACETIC ACID WITH AN ALIPHATIC PRIMARY AMINE HAVING 4-24 CARBON ATOMS PER MOLECULE AT A MOLE RATIO OF AMINE TO ACID OF AT LEAST ABOUT 2:1 AND AT A TEMPERATURE OF AT LEAST ABOUT 190*C., SAID REACTION PRODUCT HAVING AN AVERAGE CONTENT OF AMINE SALT GROUPS AND CARBOLXYL GROUPS OF AT MOST ONE OF SUCH GROUPS PER MOLECULE OF REACTION PRODUCT, AND (2) A HYDROGENATED CONDENSATION PRODUCT OF A REDUCING SUGAR AND A LONG CHAIN ALIPHATIC AMINE, THE WEIGHT RATIO OF THE IMIDE-AMIDE REACTION PRODUCT TO THE HYDROGENATED CONDENSATION PRODUCT BEING IN A RANGE FROM 9:1 TO ABOUT 500:1.
Claim 2
Dependent Claim
116 words
A COMPOSITION CONSISTING ESSENTIALLY OF THE MIXTURE OF (1) AN IMIDE-AMIDE REACTION PRODUCT OBTAINED BY REACTIN ETHYLENEDIAMINE TETRAACETIC ACID WITH AN ALIPHATIC PRIMARY AMINE HAVING 4-24 CARBON ATOMS PER MOLECULE AT A MOLE RATIO OF AMINE TO ACID OF AT LEAST ABOUT 2:1 AND AT A TEMPERATURE OF AT LEAST ABOUT 190*C., SAID REACTION PRODUCT HAVING AN AVERAGE CONTENT OF AMINE SALT GROUPS AND CARBOLXYL GROUPS OF AT MOST ONE OF SUCH GROUPS PER MOLECULE OF REACTION PRODUCT, AND (2) A HYDROGENATED CONDENSATION PRODUCT OF A REDUCING SUGAR AND A LONG CHAIN ALIPHATIC AMINE, THE WEIGHT RATIO OF THE IMIDE-AMIDE REACTION PRODUCT TO THE HYDROGENATED CONDENSATION PRODUCT BEING IN A RANGE FROM 9:1 TO ABOUT 500:1.
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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |