Patent US2805925A successfully refreshed from Google Patents.
US2805925A
Expired / Lapsed
US
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Fuel oil compositions
Assignee: EIDP Inc
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Filing: 1955-11-28
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Granted: 1957-09-10
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Expires: 1975-11-28
Abstract
No abstract record available.
Inventors
- 👤 Biswell Charles Bedford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:13
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; F; F02; F02B; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A PETROLEUM BASE FULL OIL CANTAINING (1) AS A SLUDE INHIBITING AND DISPERSING AGENT AT LEAST 0.001% BY WEIGHT OF AN OIL-SOLUBLE, BASIC AMINO NITROGEN-CONTAINING ADDITION TYPE COPOLYMER CONTAINING IN COMBINED FORM AS ITS ESSENTIAL MONOMERIC COMPONENTS COPOPLYMERIZABLE ETHYLENICALLY UNSATURATED COMPOUNDS EACH CONTAINING ONLY ONE POLYMERIZABLE ETHYLENIC LINKAGE, AT LEAST ONE OF WHICH COMPONENT IS AMINE-FREE AND CONTAINS FROM 8 TO ABOUT 18 CARBON ATOMS IN AN ALIPHATIC HYDROCARBON CHAIN WHICH IN THE POLYMER IS NOT PART OF THE MAIN CHAIN, AND ONE OF THE COMPONENTS AS IT EXISTS IN THE POLYMER CONTAINING A BAISIC AMINO NITROGEN IN THE SIDE CHAIN, SAID COPOLYMER CONTAINING 0.1% TO 3.5% BY WEIGHT OF BASIC AMINO NITROGEN AND SAID COPOLYMER HAVING AN INHERENT VISCOSITY OF 0.1 TO 3.0 AS DETERMINED AT 0.1% WEIGHT/VOLUME CONCENTRATION IN BENZENE AT 25*C., AND , (2) AS AN EMULSION INHIBITOR ABOUT 0.00025 TO 0.1% OF A FATTY ACID AMIDE OF A POLYAMINE TAKEN FROM THE GROUP CONSISTING OF ETHYLENE POLYAMINE AND PROPYLENE POLYAMINE, SAID FATTY ACID AMIDE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
172 words
A PETROLEUM BASE FULL OIL CANTAINING (1) AS A SLUDE INHIBITING AND DISPERSING AGENT AT LEAST 0.001% BY WEIGHT OF AN OIL-SOLUBLE, BASIC AMINO NITROGEN-CONTAINING ADDITION TYPE COPOLYMER CONTAINING IN COMBINED FORM AS ITS ESSENTIAL MONOMERIC COMPONENTS COPOPLYMERIZABLE ETHYLENICALLY UNSATURATED COMPOUNDS EACH CONTAINING ONLY ONE POLYMERIZABLE ETHYLENIC LINKAGE, AT LEAST ONE OF WHICH COMPONENT IS AMINE-FREE AND CONTAINS FROM 8 TO ABOUT 18 CARBON ATOMS IN AN ALIPHATIC HYDROCARBON CHAIN WHICH IN THE POLYMER IS NOT PART OF THE MAIN CHAIN, AND ONE OF THE COMPONENTS AS IT EXISTS IN THE POLYMER CONTAINING A BAISIC AMINO NITROGEN IN THE SIDE CHAIN, SAID COPOLYMER CONTAINING 0.1% TO 3.5% BY WEIGHT OF BASIC AMINO NITROGEN AND SAID COPOLYMER HAVING AN INHERENT VISCOSITY OF 0.1 TO 3.0 AS DETERMINED AT 0.1% WEIGHT/VOLUME CONCENTRATION IN BENZENE AT 25*C., AND , (2) AS AN EMULSION INHIBITOR ABOUT 0.00025 TO 0.1% OF A FATTY ACID AMIDE OF A POLYAMINE TAKEN FROM THE GROUP CONSISTING OF ETHYLENE POLYAMINE AND PROPYLENE POLYAMINE, SAID FATTY ACID AMIDE HAVING THE GENERAL 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) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |