Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8088276 | Oil re-refining system and method A lubricating oil re-refining system and process provide a highly efficient and environmentally sound alternative for reclaiming and reusing spent oils. The re-refining process advantageously removes the additives, water, wear metals and other contaminants from the ... | 01/03/2012 |
| 7488412 | Honeycomb structural body, honeycomb filter, and method of manufacturing the structural body and the filter There is disclosed a honeycomb structural body (1) comprising: a plurality of through channels (3) formed by a plurality of partition walls (2) in an axial direction. The honeycomb structural body (1) is constituted of a plurality of hone... | 02/10/2009 |
| 7316778 | Staged oil filter incorporating pelletized basic conditioner An improved oil conditioning filter, for use with an internal combustion engine, includes a mechanically active filter element and a chemically active filter element having a reactive basic conditioner therein. The reactive basic conditioner is provided to counterac... | 01/08/2008 |
| 7309680 | Molybdenum-sulfur additives A process for making an additive comprising one or more oil-soluble or oil-dispersible molybdenum-sulfur compounds, said process comprising the steps of: (I) reacting in a polar medium a reactant molybdenum compound (A) and a sourc... | 12/18/2007 |
| 7291264 | Staged oil filter incorporating additive-releasing particles An improved oil conditioning filter, for use with an internal combustion engine, includes a mechanically active filter element and a chemically active filter element containing a beneficial additive therein. The beneficial additive is provided to extend the useful l... | 11/06/2007 |
| 7267760 | Method of removing contaminants from used oil In a method of removing acidic compounds, color, and polynuclear aromatic hydrocarbons, and for removing or converting hydrocarbons containing heteroatoms from used oil distillate, phase transfer catalysts are employed to facilitate the transfer of inorganic or orga... | 09/11/2007 |
| 7261808 | Upgrading of pre-processed used oils A process to further upgrade a pre-processed used lubricating oil by: (a) contacting the partially upgraded used oil in the presence of hydrogen with a hydrodemetallization catalyst; (b) contacting the effluent of step (a) in the presence o... | 08/28/2007 |
| 7226533 | Process for re-refining used oils by solvent extraction A process to re-refine used petroleum oils by extraction with aliphatic solvents, wherein after eliminating the extract solvent, the process consists of the following treatments, (a) flash, continuous vaporization, at atmospheric pressure or near atmospheric pressur... | 06/05/2007 |
| 7166644 | Porous polymeric membrane comprising vinylidene fluoride A process for producing a porous polymeric structure which process comprises preparing a solution comprising a polymer which comprises vinylidene fluoride in a solvent/non-solvent mixture; holding the solution at an elevated temperature until the polymer is complete... | 01/23/2007 |
| 7045038 | Process for treating waste oil There is disclosed a burnable used oil fuel product by the process comprising: (a) obtaining a used oil sample having at least 1% (by weight) aqueous substances; (b) heating the used oil sample to a temperature of ... | 05/16/2006 |
| 7022639 | Catalytic activity accelerant used in petroleum hydrogenation The present invention provides a catalytic activity accelerant. The accelerant is added to stock oil for increasing the catalyst activity, the depth of catalytic hydrogenation and the yield of catalytic hydrogenation product, degrading the reaction conditions of cat... | 04/04/2006 |
| 6929737 | Method of removing contaminants from petroleum distillates In a method of removing acidic compounds, color, and polynuclear aromatic hydrocarbons, and for removing or converting hydrocarbons containing heteroatoms from petroleum distillates, phase transfer catalyst is employed to facilitate the transfer of inorganic or orga... | 08/16/2005 |
| 6712954 | Method for reprocessing waste oils, base oils obtained according to said method and use thereof The invention relates to a method for reprocessing waste oils and producing high-grade base oils, whereby waste oil is treated by means of distillation, thin-film evaporation in a high vacuum, optional fractionation for separation into layers of different viscositie... | 03/30/2004 |
| 6670309 | Method and apparatus for preparing fluorine-based solvent In preparing a purified fluorine-based solvent from a fluorine-based solution comprising a lubricant based on a fluororesin having an organic terminal group and a fluorocarbon-based solvent, impurities including ionic pollutants contained in the fluorine-... | 12/30/2003 |
| 6485632 | Apparatus and method for reclaiming waste oil for use as fuel for a diesel engine An apparatus and method for reclaiming waste oil for use as fuel for a diesel engine. A mixing tank is provided, along with a waste oil transfer pump for supplying waste oil to the mixing tank, a fuel proportioning pump for supplying a proportional amount... | 11/26/2002 |
| 6395166 | Method of reclaiming used motor oil for further use A method of reclaiming used motor oil for further use is disclosed comprising (a) admixing used impurity laden motor oil with an effective amount of acetone as a flocculating agent and an effective amount of a second ketone as a wetting agent thereby form... | 05/28/2002 |
| 6320090 | Method of removing contaminants from petroleum distillates Polynuclear aromatic hydrocarbons (PAHs) and other contaminants are removed from petroleum distillates by mixing a solvent with petroleum distillate to extract the contaminants therefrom. The solvent is recovered and distilled to separate the contaminants... | 11/20/2001 |
| 6316685 | Method for separating solids from hydrocarbon slurries Disclosed is a method for separating finely divided solids from a hydrocarbon slurry by using an additive that comprises a polymer and, optionally, an alkylbenzene sulfonic acid; and a composition of the additive thereof. The polymer is a polymer having (... | 11/13/2001 |
| 6274030 | Filtration of feed to integration of solvent deasphalting and gasification The invention is a process of removing solids, particularly catalyst fines, from an asphaltene-containing hydrocarbon liquid. The process comprises contacting an asphaltene-containing hydrocarbon liquid with a solvent to create a mixture. The solvent is t... | 08/14/2001 |
| 6191077 | Method of cleaning liquid cooling lubricants A method of cleaning mineral-oil-based liquid cooling lubricants in which the cooling lubricants, which are continuously circulated in metal-working plants, are cleaned by a deposition filtration system. A continuous or discontinuous inoculation or introd... | 02/20/2001 |
| 6174431 | Method for obtaining base oil and removing impurities and additives from used oil products A method for pretreating and re-refining used oil that requires only moderate heat and only one re-refining step. The pretreatment involves mixing the used oil with a basic solution and optionally a phase transfer catalyst. The phase transfer catalyst aid... | 01/16/2001 |
| 6117327 | Deashing and demetallization of used oil using a membrane process A method suitable for treating used oil to remove ash and metal contaminants therefrom with minimum oxidation of the oil, the metal including at least one of the components of iron, lead, copper, zinc, sodium, magnesium, and calcium, to provide a highly p... | 09/12/2000 |
| 6072065 | Alkaline treatment method for refining used oils An alkaline treatment method for refining used oils, wherein (a) the used oils are distilled; (b) the resulting distillate is treated with an alkaline agent in the presence of a solvent selected from water, a monoalcohol, a polyalcohol and a mixture of sa... | 06/06/2000 |
| 6004434 | Method of recycling cleaning solvent A method of treating cleaning solvent used to clean mechanical parts. The method includes adding to the cleaning solvent a treating composition selected from the group of C5 -C14 alcohols, C2 -C8 dials, C10... | 12/21/1999 |
| 5855768 | Process for removing contaminants from thermally cracked waste oils A process is described for removing contaminants from thermally cracked waste oil, e.g. used motor oil. In the process the cracked waste oil is contacted with a solvent comprising methanol. The thermally cracked waste oil is then separated from the solven... | 01/05/1999 |
| 5814206 | Passive acid tar neutralization process An improved process for neutralization of acid tars employs a bulk neutralizing agent having a specific gravity greater than that of the acid tar to be neutralized. The bulk neutralizing agent, generally in excess of an amount sufficient to accomplish neu... | 09/29/1998 |
| 5795463 | Oil demetalizing process Metals are removed from used, contaminated oils, such as crankcase oils from cars, by a low temperature, batch tank process. The oil is hydrated by adding enough water to prevent premature crystallization of a reagent salt from solution in a succeeding st... | 08/18/1998 |
| 5770048 | Method for removal of acid from compressor oil An alcohol, specifically ethanol, methanol and isopropanol, is used to remove acid from a refrigeration system, a heat pump or an air conditioner. The alcohol vaporizes acid, primarily inorganic acid, in the system and, in the filter/dryer, reacts with su... | 06/23/1998 |
| 5556548 | Process for contaminated oil reclamation A novel process and related apparatus for removing common contaminants from used motor oil. Propane, butane or similar solvent is mixed with the contaminated oil to form a solution. This solution is agitated and then given time to settle thus allowing gra... | 09/17/1996 |
| 5478463 | Method of reducing sludge and varnish precursors in lubricating oils A method, composition and filter for reducing the presence of sludge or varnish precursors in a lubricating oil circulating within an internal combustion engine. The lubricating oil containing sludge or varnish precursors is contacted with discrete partic... | 12/26/1995 |
| 5476988 | Settling aids for solids in hydrocarbons A method for accelerating the settling of finely divided solids in hydrocarbon fluids comprising adding to the hydrocarbon a sufficient settling amount of quaternary fatty ammonium compound. Preferably, the hydrocarbon is a fluid catalytic cracker slurry ... | 12/19/1995 |
| 5458765 | Process of drying and removing solids from waste oil This invention is a process comprising several steps for removing solid contaminants and for assisting in the dewatering of liquid hydrocarbons. For the purposes of this invention, solid contaminants include dissolved salts, either in the oil or in the em... | 10/17/1995 |
| 5447638 | Method for flocculating finely divided solids suspended in nonpolar liquids A method for flocculating finely divided particles suspended in nonpolar liquids, thereby facilitating the removal of these particles by sedimentation or filtration, by treating the contaminated nonpolar liquids with from about 0.01% to about 5% by weight... | 09/05/1995 |
| 5332507 | Recovery of oil from waste oil fluids The invention provides a method of recycling waste oil fluids including dispersed solids and emulsified water. According to the method, the waste oil is treated with an effective amount of a dispersion of a water-soluble cationic polymer.... | 07/26/1994 |
| 5332510 | Process for cleaning rolling oils Process for cleaning rolling oils which, when contaminated, contain rolling fines originating from metals being processed into semi-finished products in strip form, in particular light weight metals, e.g. aluminum fines. An addition of 2 to 8 g of dimeric... | 07/26/1994 |
| 5286380 | Apparatus for contaminated oil reclamation A novel process and related apparatus for removing common contaminants from used motor oil. Propane, butane or a similar solvent is mixed with the contaminated oil to form a solution. This solution is agitated and then given time to settle thus allowing g... | 02/15/1994 |
| 5244566 | Process for deabsorbing oil from oil absorbent A process is shown for deabsorbing oil from an oil absorbent material. A citric oil-in-water emulsion is formulated having an aqueous external phase and having a dispersed internal phase which is comprised of a distilled citric oil. The hydrocarbon contam... | 09/14/1993 |
| 5141628 | Method of cleaning and regenerating used oils Used oils, especially used lube oils, after rough filtering are mixed with an aqueous solution of water glass and an aqueous solution of polyalkylene glycol while stirring at elevated temperature, the obtained mixture is allowed to settle, the settlings a... | 08/25/1992 |
| 5064523 | Process for the hydrogenative conversion of heavy oils and residual oils, used oils and waste oils, mixed with sewage sludge Process for the hydrogenative conversion of heavy oils and residual oils, used oils and waste oils, mixed with sewage sludge in a typical liquid phase hydrogenator with gases containing hydrogen, with the addition of a finely ground substance that prefera... | 11/12/1991 |
| 5057207 | Process for reducing halogen impurities in oil products The present invention provides a method for reprocessing, particularly the dehalogenation, of oil products which involves a) treating the oil product at temperatures up to about 150° C. with an effective amount of an aqueous solution of at least one comp... | 10/15/1991 |
