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| Number | Title | Issue Date |
| 5199308 | Multi-functional level probe mounting device A sensor mount is disclosed for use in a fluid volume measurement structure forming part of a fluid measurement system for feeding fluid in controlled amounts. The sensor mount includes a tubular body having first and second sensor mounting sockets whereb... | 04/06/1993 |
| 5194142 | Method for controlling fouling deposit formation in a liquid hydrocarbonaceous medium Enaminones of polyalkenylsuccinimides are used as effective antifoulants in liquid hydrocarbonaceous mediums, such as crude oils and gas oils, during processing of such liquids at elevated temperatures. The enaminones are formed via reaction of polyalkeny... | 03/16/1993 |
| 5183554 | Method for controlling fouling deposit formation in a liquid hydrocarbonaceous medium Reaction products of (a) polyalkenylsuccinic anhydride; (b) secondary, aromatic amines, and (c) hindererd alcohols are used as effective antifoulants in liquid hydrocarbonaceous mediums, such as crude oils and gas oils, during processing of such liquids a... | 02/02/1993 |
| 5171420 | Method for controlling fouling deposit formation in a liquid hydrocarbonaceous medium Reaction products of (a) hydrocarbon substituted succinic acid or anhydride, (b) mono to hexa-hydroxy alcohols, (c) primary or secondary hydroxy substituted amines, (d) polyalkenylsuccinimide, and (e) a polyoxyalkyleneamine, are effective antifoulants in ... | 12/15/1992 |
| 5171421 | Method for controlling fouling deposit formation in a liquid hydrocarbonaceous medium Polyalkenylsuccinimide-maleic anhydride reaction products are used as effective antifoulants in liquid hydrocarbonaceous mediums, such as crude oils and gas oils, during processing of such liquids at elevated temperatures. The reaction products are formed... | 12/15/1992 |
| 5169410 | Methods for stabilizing gasoline mixtures Oxidative stability of gasoline mixtures is improved by adding to the gasoline a phenylenediamine compound (I) in combination with a strongly basic organoamine compound (II). The compound (II) may comprise alkyphenol-polyamine-formaldehyde Mannich reactio... | 12/08/1992 |
| 5154817 | Method for inhibiting gum and sediment formation in liquid hydrocarbon mediums Gum and sediment formation in liquid hydrocarbon mediums are inhibited by adding to the medium a branched or straight chain C1 -C8 aminoalcohol. The invention is particularly well-suited for use in hydrodesulfurizer processes wherein... | 10/13/1992 |
| 5139643 | Phosphorus derivatives of polyalkenylsuccinimides and methods of use thereof Phosphorus derivatives of polyalkenylsuccinimides and methods of use of such derivatives as antifoulants in liquid hydrocarbonaceous mediums, such as crude oil, during processing at elevated temperatures are disclosed. The derivatives are formed via react... | 08/18/1992 |
| 5112413 | Method for treating metal surfaces with a polymer solution Methods for treating metal surfaces including contacting the surface with a water soluble or water dispersible polymer comprising a repeat unit (a) having the structure ##STR1## or salt form of said repeat unit, wherein R and R1 are the sa... | 05/12/1992 |
| 5100532 | Selected hydroxy-oximes as iron deactivators 2'-hydroxy-4' or 5'-alkylacetophenone oximes and 2-hydroxy-4 or 5-alkylbenzaldehyde oximes are used to deactivate iron species contained in hydrocarbon fluids. Left untreated, iron leads to decomposition of the hydrocarbon, resulting in the formation of g... | 03/31/1992 |
| 5080779 | Methods for removing iron from crude oil in a two-stage desalting system Methods of diminishing the content of soluble and insoluble forms of iron from crude are disclosed. Crude and water soluble chelant are mixed prior to addition of wash water. After wash water addition, an emulsion is formed. After resolution of the emulsi... | 01/14/1992 |
| 5079036 | Method of inhibiting freezing and improving flow and handleability characteristics of solid, particulate materials A stable foam having foam bubble diameters of 0.005-0.015 inches and being comprised of from about 10-30 wt. % of a brine freeze control agent selected from the group consisting of sodium chloride, calcium chloride, magnesium chloride, potassium chloride,... | 01/07/1992 |
| 5052582 | Containment basin assembly for chemical storage tank A containment basin assembly for receipt of a tank of liquid chemical or the like is disclosed wherein a mounting stand for the tank is integral with the basin and positioned off-center therein. A bucket can be conveniently located underneath the manifold... | 10/01/1991 |
| 5023372 | Methods and compositions for inhibiting (meth)acrylic acid polymerization Methods and compositions are provided for inhibiting the polymerization of acrylic acid monomers during elevated temperature processing thereof or during storage or shipment of acrylic acid product. The compositions comprise a combination of a Mn source c... | 06/11/1991 |
| 5000836 | Method and composition for retarding coke formation during pyrolytic hydrocarbon processing Methods and compounds for inhibiting coke formation in pyrolytic reactors and furnaces are disclosed wherein a molybdenum coke retarding treatment is used. Optionally, but preferably, a boron compound is used in conjunction with the molybdenum to provide ... | 03/19/1991 |
| 4981495 | Methods for stabilizing gasoline mixtures Oxidative stability of gasoline mixtures is improved by adding to the gasoline an alkyl 1,2-dihydroquinoline compound, dimer, trimer or polymer thereof. Optionally, a hindered phenol may be conjointly used with the quinoline compound.... | 01/01/1991 |
| 4962264 | Methods for retarding coke formation during pyrolytic hydrocarbon processing Methods are disclosed for inhibiting coke formation in pyrolytic reactors or furnaces during the pyrolysis operation. Rare earth elements or compounds thereof, such as cerium and lanthanum elements or compounds, are added to the particular hydrocarbonaceo... | 10/09/1990 |
| 4956076 | Method of scavenging hydrogen halides from liquid hydrocarbonaceous mediums Methods of scavenging hydrogen halide species from hydrocarbon liquids are disclosed. Preferred scavengers includes allyl alcohol, benzyl alcohol and tertiary alcohols such as tert-butyl alcohol.... | 09/11/1990 |
| 4952301 | Method of inhibiting fouling in caustic scrubber systems A method for inhibiting the formation of polymeric based fouling deposits normally formed during the caustic washing of hydrocarbons is disclosed. The method comprises adding an effective amount for the purpose of an ethylenediamine compound (e.g., ethyle... | 08/28/1990 |
| 4941968 | Method for inhibiting gum formation in liquid hydrocarbon mediums Gum and sediment formation in liquid hydrocarbon mediums are inhibited by adding to the medium an alkyl 1,2-dihydroquinoline compound, dimer, trimer or polymer thereof. The invention is particularly well-suited for use in hydrodesulfurizer processes where... | 07/17/1990 |
| 4929778 | Methods and compositions for inhibiting styrene polymerization Methods and compositions are provided for inhibiting the polymerization of styrene monomer during elevated temperature processing thereof or during storage or shipment of styrene containing product. The compositions comprise a combination of (a) a phenyle... | 05/29/1990 |
