With Organic Treating Agent (e.g., Solvent, Surfactant, Or Reactant Yielding Soluble Product, Etc.) Patents (Class 134/22.14)
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Publication number: 20040052679Abstract: Reusable instruments, such as reusable medical instruments, and related systems and methods, are disclosed. In some embodiments, the reusable instrument can be an endoscope.Type: ApplicationFiled: March 18, 2003Publication date: March 18, 2004Inventors: Thomas V. Root, Robert J. Krupa
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Patent number: 6705329Abstract: The present invention provides a method of manufacturing a high-pressure fuel injection pipe in which various foreign particles are substantially completely eliminated from the inner circumferential surface of a high-pressure fuel injection pipe. The method of manufacturing a high-pressure fuel injection pipe is characterized in that the inner circumferential surface of a metal pipe having a large wall thickness and a small diameter is cleaned using a solvent for dissolving foreign particles comprising an acid, alkali or organic solvent after a final pipe-extending step among steps for manufacturing the metal pipe.Type: GrantFiled: June 9, 1997Date of Patent: March 16, 2004Assignee: Usui Kokusai Sangyo Kaisha LimitedInventor: Masayoshi Usui
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Patent number: 6702903Abstract: A washing method of petroleum equipment using washing solution capable of being used in a waterless environment is provided. A compound of surface-active agent and oil is used as the washing solution of the petroleum equipment. Content of the surface-active agent in the compound is preferably 1 to 20 volume %. The surface-active agent is preferably selected from the group consisting of anionic surface-active agent, cationic surface-active agent, amphoteric surface-active agent and nonionic surface-active agent. The oil is preferably at least one selected from the group consisting of kerosene, light gas oil, vacuum gas oil and light cycle oil fraction obtained from a fluid catalystic cracking unit.Type: GrantFiled: October 11, 2002Date of Patent: March 9, 2004Assignee: Softard Industries Co., Ltd.Inventors: Katshuiko Kawakami, Hirozumi Hosokawa
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Patent number: 6699331Abstract: Apparatus for wiping a contaminated lumen of an endoscope including a cleaning member having at least one radially extending fin for passing axially through the lumen with at most a small clearance whereby contamination remaining after passage of the member through the lumen is substantially uniformly distributed as a thin film on an internal wall of the lumen. The invention also relates to a method for cleaning a contaminated lumen of an endoscope including pulling or pushing a cleaning member axially through the lumen and treating the uniformly distributed film with a cleaning composition.Type: GrantFiled: June 12, 2001Date of Patent: March 2, 2004Assignee: Novapharm Research (Australia) PTY LTDInventor: Steven Kritzler
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Patent number: 6695927Abstract: A method and a solution are provided for cleaning a container, in particular a boiler of a conventional power station. The container is degreased and pickled in one method step using an alkaline cleaning solution. A suitable cleaning solution includes, for example, an ammonium EDTA salt, hydrazine and a surfactant.Type: GrantFiled: November 22, 2000Date of Patent: February 24, 2004Assignee: Siemens AktiengesellschaftInventors: Ursula Hollwedel, Klaus Kuhnke
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Patent number: 6679274Abstract: A method is taught for cleaning photographic chemistry product fouling, including a proteinaceous portion and a non-proteinaceous portion from a liquid delivery system. The method comprises the steps of displacing resident product solution in the piping with water, hydrodynamically cleaning the piping system using two-phase flow a first time, chemically cleaning the piping system with an aqueous bleach solution to remove the proteinaceous portion of the photographic chemistry product fouling, chemically cleaning the piping system with a functionalized ethyl acetate solvent to remove the non-proteinaceous portion of the photographic chemistry product fouling, and hydrodynamically cleaning the piping system using two-phase flow a second time after the chemical cleaning steps to remove remaining residue. Preferably, after the second hydrodynamic two-phase flow cleaning step, the delivery system is subjected to a high purity water rinse.Type: GrantFiled: August 10, 2001Date of Patent: January 20, 2004Assignee: Eastman Kodak CompanyInventors: David W. Gruszczynski, Douglas E. Margevich, Mark Fornalik
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Patent number: 6676768Abstract: The present invention comprises methods, compositions and apparatus for cleaning the surfaces within vessels that have restricted points of entry, and in particular, the surfaces within oxygen converters and oxygen cylinders. These oxygen converters and oxygen cylinders are components of the onboard oxygen supply systems of aircraft. A surfactant and a solvent are mixed to form a cleaning composition that is boiled at reduced pressure and increased temperature within the oxygen converter or oxygen cylinder. The oxygen converter or oxygen cylinder is rinsed with pure solvent, and the rinse fluid is measured to determine the level of contaminants. Dry air is forced through the oxygen converter or oxygen cylinder to remove remaining solvent. The cleaning composition may comprise a fluorocarbon solvent and a fluorosurfactant.Type: GrantFiled: July 30, 2002Date of Patent: January 13, 2004Assignee: Versar, Inc.Inventors: Gregory M. Fillipi, Bobby E. Walls, Anthony K. Magerus, Jerry L. Gore, Jerome B. Strauss, Gerard K. Newman, Jan Goldberg, Christy Crowe
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Patent number: 6660103Abstract: A method of cleaning ink jet printheads without rendering the printheads inoperative by soaking the printheads in a cleaning solution of acetone and n-methyl-2-pyrolidine, and then flushing the printhead with a gas, such as air. The solution is made of about 70% acetone and about 30% n-methyl-2-pyrolidine by weight.Type: GrantFiled: March 28, 2002Date of Patent: December 9, 2003Assignee: VUTEk, Inc.Inventors: Ian Johnston, Greg Sinchar
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Publication number: 20030221710Abstract: The present invention provides a method and apparatus for delivering a cleaning and inspection device to an appropriate position on a backplane having an optical connector. A set of tubes corresponding to the number of optical connectors is attached to the rear of a connector assembly or some other similar device capable of being coupled to a connector housing containing the optical connector. The diameter of the hollow tube large enough to accommodate the insertion of several types of cleaning and inspection devices including optical cleaning swabs and scopes. After the connector assembly is mated with the connector housing, the tubes can provide direct access to each optical connector for cleaning and inspection.Type: ApplicationFiled: June 3, 2003Publication date: December 4, 2003Inventor: Marvin R. Young
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Patent number: 6644326Abstract: A process is described for removing olefinic polymer mass buildup fouling process equipment to restore the efficiency of such equipment. This is accomplished by circulating through the equipment in contact with the polymer an aromatic hydrocarbon solvent having a high boiling point and low vapor pressure for a period of time sufficient to remove the polymer. The solvent is recovered for reuse by a flash separation from the removed olefinic polymer mass.Type: GrantFiled: September 4, 2002Date of Patent: November 11, 2003Inventors: Michael R. Dorton, Gary L. Gardner, Sr.
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Patent number: 6641740Abstract: The deleterious effects of metal ions in water, for example water hardness and formation of deposits, may be combated by application of an algin, for example alginic acid or a salt of alginic acid, such as sodium alginate or potassium alginate. Such a compound may bring about water purification and/or softening and prevent formation of deposits. Furthermore, such a compound may promote the removal of existing deposits, for example scale.Type: GrantFiled: March 21, 2002Date of Patent: November 4, 2003Assignee: Reckitt Benckiser (UK) LimitedInventors: Gay Joyce Cornelius, Ian Gordon Jolliffe, Malcolm Tom McKechnie, Edvar Jarle Onsoyen
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Patent number: 6638902Abstract: The present invention relates to a solid enzyme cleaning composition in which the enzyme is stable in the presence of mixtures of carbonate and bicarbonate at alkaline pH, and methods employing this composition. The enzyme cleaning composition preferably employs weight ratios of carbonate and bicarbonate to stabilize one or more enzymes in a solid, a concentrate, and/or a use composition, and at temperatures higher than ambient.Type: GrantFiled: February 1, 2001Date of Patent: October 28, 2003Assignee: Ecolab Inc.Inventors: James J. Tarara, Sally K. Swart, Tareasa Lynn Bradley, Reid Rabon, Denise Chandler
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Publication number: 20030186065Abstract: Disclosed is a method for protecting surface of glass, especially LCD glass substrates, from ambient contaminants and/or contaminants produced during the processing of the glass and/or scratching. The method comprises the steps of (A) forming a protective coating on the surface of the glass by (i) applying a coating composition comprising at least one polymeric acid to the surface, and (ii) removing the solvent from the solution applied to said surface to leave a polymeric acid-containing protective coating on the surface having a thickness of at least 0.01 micron; wherein the polymeric acid-containing coating can be subsequently removed from the surface using a cleaning composition, to result in a surface which is substantially clean; and optionally (B) subsequently removing the protective coating from the surface of the glass using a cleaning composition, to result in a surface which is substantially clean.Type: ApplicationFiled: March 27, 2002Publication date: October 2, 2003Inventors: Jun Hou, Adrienne M. Powell-Johnson, Robert G. Schaeffler, Youchun Shi
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Patent number: 6616771Abstract: A computer-implemented method and system for cleaning a contaminated cannula so that it may be reused includes moving the contaminated cannula from a drug reconstitution station where the cannula is used to prepare a drug solution into a first rinsing station where the cannula is cleaned. A database is referred to to determine what drug solution the cannula has been contaminated with, and to determine a first amount of cleaning fluid that needs to be passed internally through the cannula, and a second amount of cleaning fluid that needs to be passed externally about the cannula so that there is effectively no contaminant remaining inside and outside of the cannula. The first amount of cleaning fluid is passed internally through the cannula. The second amount of cleaning fluid is passed externally about the cannula. After the cannula is cleaned, the cannula is moved to the drug reconstitution station to prepare another drug solution.Type: GrantFiled: November 30, 2001Date of Patent: September 9, 2003Assignee: Forhealth Technologies, Inc.Inventors: Joel A. Osborne, Dennis Tribble, William C. Aven
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Patent number: 6605155Abstract: A descaling composition for use in removing scale deposited on a member made of titanium or a titanium alloy, the descaling composition containing a hydroxycarboxylic acid, a sulfamic acid and ammonium sulfate as effective components and effectively inhibiting titanium ions from dissolving out.Type: GrantFiled: July 23, 2002Date of Patent: August 12, 2003Assignee: Seiwa Pro Co., Ltd.Inventor: Takeshi Sugimoto
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Publication number: 20030133827Abstract: This invention provides a method of treating a dry or processed fluid pipe line susceptible to the build-up of iron sulfide deposits by complexing the iron sulfide in the pipe lines. The method of the present invention introduces the composition on a continuous or a batch basis to a gas pipe line. The composition is made of a solution of 1) water, 2) [tetrakis (hydroxymethyl) phosphonium] sulfate or chloride, and 3) a soluble ammonium salt, such as ammonium chloride or the like.Type: ApplicationFiled: January 10, 2002Publication date: July 17, 2003Inventor: Mark Andrew Mattox
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Publication number: 20030098041Abstract: Brass articles having leachable lead are contacted with an aqueous caustic solution that contains a chelating agent. A brass article can optionally be post-treated by contacting it with an aqueous solution containing hydrogen peroxide.Type: ApplicationFiled: September 10, 2002Publication date: May 29, 2003Inventors: Edward L. Cote, Andrew D. Wenzel, Lance E. Agness
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Patent number: 6569252Abstract: A process of cleaning of objects that relate to semiconductor fabrication processes, such as, for example, conductive paste screening in the production of multilayer ceramic substrates and composite solder paste by stencil printing in electronic circuit assembly. Specifically, the process removes a metal/polymer composite paste from screening masks and associated paste making and processing equipment used in printing conductive metal pattern onto ceramic green sheet in the fabrication of semiconductor packaging substrates. The process also cleans solder paste residue from stencil printing equipment used in electronic module assembly surface mount technology for SMT discretes, solder column attachment, and BGA (Ball Grid Array) attachment on ceramic chip carrier or for screening solder paste onto printed circuit board.Type: GrantFiled: June 30, 2000Date of Patent: May 27, 2003Assignee: International Business Machines CorporationInventors: Krishna G. Sachdev, James N. Humenik, Chon Cheong Lei, Glenn A. Pomerantz
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Patent number: 6565663Abstract: The invention relates to the use of organic carbonates having formula (I) wherein: n=1-4 R and R′ are two linear or branched alkyl radicals which contain a number of carbon atoms whose sum is equal to at least 5 and which can be the same or different, as solvents for the washing of metal surfaces.Type: GrantFiled: December 31, 2001Date of Patent: May 20, 2003Assignee: Enichem S.p.A.Inventors: Franco Mizia, Franco Rivetti
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Patent number: 6564813Abstract: A process is presented for cleaning fermentation or storage tanks with an enzyme-containing formulation containing one or more laccases, peroxidases, oxireductases, transferases, isomerases, lyases, and ligases or a mixture thereof. The process provides improved cleaning results, water consumption, and waste water pollution.Type: GrantFiled: April 7, 2000Date of Patent: May 20, 2003Assignee: Ecolab GmbH & Co. OHGInventors: Marion Lengling, Harald Kluschanzoff
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Patent number: 6555012Abstract: A composition and method particularly designed to treat blackwater deposit. In at least one example, a composition for use in removing and preventing buildup of blackwater deposits in blackwater collection/treatment systems. The composition includes in the range of about 2 to about 15 wt. % of acidic solubilizing agent; in the range of about 0.2 to about 8 wt. % of wetting agent; in the range of about 0 to about 1 wt. % corrosion inhibitor; and a solvent/carrier medium. Another aspect is a concentrated composition to be diluted before or during use, the concentrated composition comprising in the range of about 10 to about 70 wt. % of acidic solubilizing agent; in the range of about 1 to about 40 wt. % of wetting agent; in the range of about 0 to about 5 wt. % corrosion inhibitor; and a solvent. In another example, a method for removing and preventing buildup of blackwater deposit in a blackwater collection system.Type: GrantFiled: October 2, 2000Date of Patent: April 29, 2003Assignee: Ecolab Inc.Inventors: Peter J. Fernholz, Don Southworth, Victor F. Man
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Patent number: 6554006Abstract: The present invention provides a method of removing copper oxide deposits from stator water cooling system piping material surfaces. The present invention disconnects the generator from the stator water cooling system, connects bridging piping to the stator water cooling system at the points from which the generator was disconnected to allow the stator water cooling system to operate without the generator, provides a sufficient amount of an aqueous solution of an agent which dissolves or removes copper oxide deposits from piping material surfaces for a time sufficient to dissolve or remove substantially all copper oxide deposits, and rinses the piping material surfaces with sufficient water until the output water from the rinsing of the piping material surfaces is essentially neutral.Type: GrantFiled: December 22, 2000Date of Patent: April 29, 2003Assignee: General Electric CompanyInventor: Raymond Grant Rowe
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Patent number: 6555506Abstract: A method of preventing corrosion in pipelines comprising draining pipeline of all residual compounds, blowing through with nitrogen and rinsing with a corrosion inhibiting rinsing agent.Type: GrantFiled: November 29, 2001Date of Patent: April 29, 2003Assignee: Illinois Tool Works Inc.Inventors: William Hopkins, Christopher Nettleship
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Patent number: 6554007Abstract: An improved composition and method for cleaning and disinfecting a garbage disposal that does not require aerosol propellants or carbon dioxide gas generating reaction systems. The composition comprises a suds stabilizing surfactant and a disinfecting agent, plus other optional ingredients such as additional detergent surfactant and scouring agents. In the method of cleaning and disinfecting, a flow of water is provided to the garbage disposal and the composition is then added while the garbage disposal is turned on. The mechanical action of the garbage disposal grinder blades rapidly mixes the composition with water to create suds and disperse the suds around the entire interior chamber, thus cleansing and disinfecting the garbage disposal. After the suds are generated, the flow of water is discontinued, with the garbage disposal being turned off within about 1 minute after the flow of water is discontinued.Type: GrantFiled: January 25, 2001Date of Patent: April 29, 2003Inventor: William S. Wise
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Patent number: 6551411Abstract: A detergent composition useful for cleaning away a resin remaining in a molding machine after molding, comprising a thermoplastic resin, water and wollastonite.Type: GrantFiled: August 30, 2001Date of Patent: April 22, 2003Assignee: Asahi Kasei Kabushiki KaishaInventors: Mikihiko Ito, Noriko Yamauchi
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Patent number: 6550485Abstract: There is provided a method of efficiently removing polymer stuck to the inside and/or on the surface of packings of a distillation tower, when nitrogen-containing polymerizable monomers (for example, ethyleneimine) are distilled. Said method consists of washing the inside and/or packings of a distillation tower with an acidic liquid (for example, aqueous solution of acetic acid).Type: GrantFiled: September 21, 2001Date of Patent: April 22, 2003Assignee: Nippon Shokubai Co., Ltd.Inventors: Yoshihisa Oka, Kenichi Takematsu
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Publication number: 20030062066Abstract: A method is taught for cleaning photographic chemistry product fouling, including a proteinaceous portion and a non-proteinaceous portion from a liquid delivery system. The method comprises the steps of displacing resident product solution in the piping with water, hydrodynamically cleaning the piping system using two-phase flow a first time, chemically cleaning the piping system with an aqueous bleach solution to remove the proteinaceous portion of the photographic chemistry product fouling, chemically cleaning the piping system with a functionalized ethyl acetate solvent to remove the non-proteinaceous portion of the photographic chemistry product fouling, and hydrodynamically cleaning the piping system using two-phase flow a second time after the chemical cleaning steps to remove remaining residue. Preferably, after the second hydrodynamic two-phase flow cleaning step, the delivery system is subjected to a high purity water rinse.Type: ApplicationFiled: August 10, 2001Publication date: April 3, 2003Applicant: Eastman Kodak CompanyInventors: David W. Gruszczynski, Douglas E. Margevich, Mark Fornalik
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Patent number: 6530382Abstract: Methods for cleaning screw extruder, especially powder-coating extruders, include filling the extruder barrel with a gel purge formulation comprised of a high-boiling pyrrolidone or piperidone (lactam) solvent (most preferably N-methyl pyrrolidone (NMP)), thickened with 5-50 wt. % of a thermoplastic resin thickening agent, most preferably polystyrene (PS). Once the extruder barrel is filled with the gel purge formulation, the screws are stopped and the gel allowed to soak for between about 10 to about 30 minutes. The screws are then restarted and the gel is discharged from the extruder. Immediately after the gel purge formulation exits the machine, a small amount of a thermoplastic “rinse” polymer (e.g., polyethylene) may be added so as to remove any vestigial amount of the gel purge formulation therefrom.Type: GrantFiled: June 6, 2001Date of Patent: March 11, 2003Assignee: BASF CorporationInventor: Mark W. Waldrop
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Patent number: 6524397Abstract: A method for removing an acidic deposit containing a sulfur compound, which comprises contacting the acidic deposit with an aqueous solution of an alkali metal carbonate and/or an alkali metal hydrogencarbonate to remove it.Type: GrantFiled: April 5, 2001Date of Patent: February 25, 2003Assignee: Asahi Glass Company, LimitedInventors: Shigeru Sakurai, Masaharu Emoto, Hachiro Hirano, Makoto Yoshida, Hiroaki Noda, Michihiro Kawano
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Patent number: 6514352Abstract: The cleaning method described above is characterized by allowing a cleaning agent comprising an oxidizing agent, a chelating agent and fluorine compound to flow on a surface of a material to be treated at a high speed to thereby clean the above surface according to the present invention, deposits adhering firmly to a surface of a material to be treated can readily be removed without damaging the material to be treated.Type: GrantFiled: October 9, 2001Date of Patent: February 4, 2003Assignees: Tokyo Electron Limited, Mitsubishi Gas Chemical Company Inc.Inventors: Hideto Gotoh, Takayuki Niuya, Hiroyuki Mori, Hiroshi Matsunaga, Fukusaburo Ishihara, Yoshiya Kimura, Ryuji Sotoaka, Takuya Goto, Tetsuo Aoyama, Kojiro Abe
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Patent number: 6514350Abstract: This invention relates to a process for removing rust from metal surfaces. The process uses an aqueous solution of a benzoate.Type: GrantFiled: September 14, 2001Date of Patent: February 4, 2003Assignee: Ashland Inc.Inventors: Bruce L. Libutti, Joseph Mihelic
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Patent number: 6514458Abstract: Method for removing microbial biofilm from surfaces in contact with an aqueous system is disclosed, which comprises adding to the system a treatment comprising low foaming, ethoxylated anionic surfactant composed of alkyl substituted carboxylated acid or salt thereof and polyoxyethylene-polyoxypropylene block copolymer.Type: GrantFiled: February 25, 2000Date of Patent: February 4, 2003Assignee: GE Betz, Inc.Inventors: Melvin H. Czechowski, Wilson K. Whitekettle
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Patent number: 6511613Abstract: The reaction of propargyl alcohol and iodine gives 2,3di-iodo-2-propen-1-ol, and it has been discovered that this compound is effective as an intermediate in a corrosion inhibitor for metals in acid media, particularly halogen acids. The compound provides iodine to the media in a stable form that does not appear to degrade over time.Type: GrantFiled: June 21, 2002Date of Patent: January 28, 2003Assignee: Baker Hughes IncorporatedInventors: Arthur Cizek, James A. Hackerott
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Publication number: 20030015219Abstract: A method for removing gross soils from a substrate during a multi-step cleaning process comprising the step of flushing the substrate with a pre-rinse solution prior to application of a cleaning solution and/or second rinse solution. The pre-rinse solution comprises water and a partially neutralized anionic polymer.Type: ApplicationFiled: April 20, 2001Publication date: January 23, 2003Inventors: Joseph I. Kravitz, Richard O. Ruhr, Andrew T. Gioino
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Patent number: 6503337Abstract: A method for chemically removing hydrocarbons from oil contaminated material is described. The method comprises contacting the material containing the oil with a combinations of surfactants in an oil carrier similar to or identical to the oil to be removed. This process avoids the use of water. Therefore the process does not compromise the quality of the oil by having water as a contaminant and thus eliminating the possibility of oil contaminated water getting into the environment. In certain examples, when the process is used to remove oil from land based well bore cuttings, the processed well bore cuttings contain high levels of chlorides, which is an environmental problem. In such examples the method also includes contacting the well bore cuttings with a solution of dioctyl sodium sulfosuccinate in water to reduce the chloride concentration. An apparatus designed for this purpose is also described.Type: GrantFiled: December 13, 1999Date of Patent: January 7, 2003Assignee: BGR Oilfield Services, Inc.Inventor: Brian G. Roberts
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Patent number: 6503334Abstract: The present invention is directed to methods for cleaning films and particulates from the compressor section and combustion contaminants from the combustion and turbine sections of a combustion turbine. Particulate films and contaminants adhering to the internal components of the compressor section of a turbine are readily removed by forcing a mist comprising a cleaning solution such as an aqueous surfactant solution through the compressor section. Contaminants resulting from fuel combustion and deposited in the combustion and turbine sections are removed by forcing a mist comprising a second cleaning solution through those sections. The second solution typically comprises an aqueous acid solution optionally including a corrosion inhibitor. The compressor section must be isolated from such acid solutions, e.g. by continuing to force the misted surfactant solution through the compressor section prior to and simultaneously with forcing the misted acid solution through the combustion section.Type: GrantFiled: March 14, 2001Date of Patent: January 7, 2003Assignee: HydroChem Industrial Services, Inc.Inventors: R. Dwane Ruiz, Charles D. Foster
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Publication number: 20020187912Abstract: Methods for cleaning screw extruder, especially powder-coating extruders, include filling the extruder barrel with a gel purge formulation comprised of a high-boiling pyrrolidone or piperidone (lactam) solvent (most preferably N-methyl pyrrolidone (NMP)), thickened with 5-50 wt. % of a thermoplastic resin thickening agent, most preferably polystyrene (PS). Once the extruder barrel is filled with the gel purge formulation, the screws are stopped and the gel allowed to soak for between about 10 to about 30 minutes. The screws are then restarted and the gel is discharged from the extruder. Immediately after the gel purge formulation exits the machine, a small amount of a thermoplastic “rinse” polymer (e.g., polyethylene) may be added so as to remove any vestigial amount of the gel purge formulation therefrom.Type: ApplicationFiled: June 6, 2001Publication date: December 12, 2002Inventor: Mark W. Waldrop
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Patent number: 6485578Abstract: Disclosed is a chemical cleaning process for removing fouling from process lines of oil refining or petrochemical plants. The process lines are in an on-line state and a chemical cleaning agent is circulated through the process lines to remove the fouling. It can effectively recover the thermal efficiency in oil refining processes or petrochemical processes within a short period of time, so that significant energy consumption is reduced. Furthermore, the chemical cleaning process requires a shorter cleaning period and therefore allows for a longer operating time. It can also dislodge fouling without opening heat exchangers or other equipment thereby preventing the release of VOCs. As a result, environmental pollution is not generated. The present invention is also ecconomically favorable as it extends the time between periodic maintenance.Type: GrantFiled: July 6, 2000Date of Patent: November 26, 2002Assignee: SK CorporationInventors: Sam-Ryong Park, Young-Kyoung Ahn, Sung-Gu Oh, Ki-Hyun Lee, Sung-Joong Kim
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Publication number: 20020173437Abstract: The present invention relates to methods for cleaning, rinsing, and/or antimicrobial treatment of medical carts, medical cages, and other medical instruments, devices or equipment. The method for cleaning employs a solid alkaline, for example a solid carbonate, cleaning composition for cleaning the medical cart, cage, instrument, device, or equipment. The method for rinsing employs a solid neutral or neutralizing rinse composition for rinsing the medical cart, cage, instrument, device, or equipment. The method for antimicrobial treatment employs a solid, for example a solid quaternary ammonium or solid halogen, antimicrobial composition, for antimicrobial treatment of the medical cart, cage, instrument, device, or equipment.Type: ApplicationFiled: March 23, 2001Publication date: November 21, 2002Inventors: Reid Rabon, Sally K. Swart, Denise Chandler, Terrence P. Everson
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Patent number: 6475981Abstract: A process for freezing a plastic molding machine involving: (a) providing a freezable compound containing: (i) from 20 to 45% by weight of at least one homopolymer or copolymer selected from the group consisting of an ester of methacrylic acid with a monohydric alcohol having from 1 to 4 carbon atoms, a graft polymer of an ester of methacrylic acid with a monohydric alcohol having from 1 to 4 carbon atoms, an ethylene/vinyl acetate copolymer, a graft copolymer of an ethylene/vinyl acetate copolymer, and mixtures thereof; (ii) from 45 to 75% by weight of chalk having a particle size of from 2 to 150 microns; and (iii) from 0.01 to 10% by weight of at least one freezing agent selected from the group consisting of a lubricant having a volatility of less than 0.2% by weight, a release agent having a volatility of less than 0.2% by weight, and mixtures thereof; and (b) charging the plastic molding machine with the freezable compound prior to turning of the plastic molding machine.Type: GrantFiled: March 13, 2001Date of Patent: November 5, 2002Assignee: Cognis Deutschland GmbH & Co. KGInventor: Manfred Jaeckel
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Patent number: 6475295Abstract: A method for cleaning paint carrying parts of a paint shop, especially the paint lines, is described, wherein the paint carrying parts are rinsed with a liquid containing an organic solvent. In order to obtain particularly advantageous conditions, polyaspartic acid is mixed with the rinsing liquid.Type: GrantFiled: March 29, 2001Date of Patent: November 5, 2002Assignee: Aware Chemicals L.L.C.Inventors: Alfred Bohnes, Johannes Lindemann, Karl Manderscheid, Dirk Bohnes
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Patent number: 6476286Abstract: A process for the recovery of TNT and aluminum from tritonal-containing military shells. The process uses a solvent in which the TNT is substantially soluble, but not the aluminum. This results in a liquid organic solvent phase and a solid aluminum particle phase. The aluminum particles are recovered by conventional solid-liquid separation techniques, such as filtering, gravity settling, and the like. The TNT is recovered from the solvent by flashing or evaporating the solvent and recrystallizing the TNT.Type: GrantFiled: May 12, 2000Date of Patent: November 5, 2002Assignee: Gradiaent TechnologyInventors: William J. Taylor, Duane A. Goetsch
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Patent number: 6469201Abstract: In the preparation of esters of acrylic or methacrylic acid by esterification with alcohols, the interfering deposits formed on the apparatus parts by relatively high molecular weight by-products can be avoided, removed or lessened by allowing a liquid partly or wholly consisting of the alcohol used for the esterification to act on the deposits, fouled apparatus parts or on the surfaces of the apparatus parts on which deposits are easily formed, with preference being given to wetting the deposits or surfaces using suitable nozzles or cleaning sprayers.Type: GrantFiled: March 17, 1999Date of Patent: October 22, 2002Assignee: BASF AktiengesellschaftInventors: Friedrich-Georg Martin, Armin Schraut, Josef Wekerle
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Patent number: 6468359Abstract: The invention relates to a method for cleaning a metallic or an enameled surface comprising flooding a metallic surface contaminated with deposits with a mixture comprising (i) water, (ii) chippings of woods selected from the group consisting of merantis, bongossis, mahoganies, sipos, khayas, lauans, and sapellis, and (iii) a member selected from the group consisting of polyaspartic acid, salts of polyaspartic acid, and polysuccinimide, and thereby cleaning the surface.Type: GrantFiled: March 16, 2001Date of Patent: October 22, 2002Assignee: Bayer AktiengesellschaftInventors: Manfred Gerlach, Bernhard Lehmann
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Patent number: 6467492Abstract: A method of preventing corrosion in pipelines comprising draining pipeline of all residual compounds, blowing through with nitrogen and rinsing with a corrosion inhibiting rinsing agent.Type: GrantFiled: February 23, 2001Date of Patent: October 22, 2002Assignee: Illinois Tool Works, Inc.Inventors: William Hopkins, Christopher Nettleship
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Publication number: 20020144718Abstract: Paint residues may be removed from spraying equipment and the like by flushing with aqueous compositions containing alkoxylated aromatic alcohols wherein the aromatic ring moieties of such alcohols do not bear any alkyl substituent containing more than 4 carbon atoms. Preferably, the aqueous compositions also contain an alkanolamine or other base. The alkoxylated aromatic alcohols contain an average of at least about 2 oxyalkylene moieties (preferably, oxyethylene moieties) per molecule.Type: ApplicationFiled: December 20, 2001Publication date: October 10, 2002Inventor: Neil R. Wilson
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Patent number: 6461442Abstract: A process including providing a hollow imaging drum having a first end, a second end, an outside surface, an inside surface and coating material on both the inside surface and the outside surface at at least the first end, simultaneously contacting the coating material on both the inside surface and the outside surface at the first end of the drum with resilient foam material, flowing liquid solvent for the coating material to the foam material where the foam material contacts the first end of the drum, the foam material being insoluble in the flowing solvent, producing relative movement between the foam material and the drum to simultaneously wipe both the inside surface and the outside surface of the first end of the drum with the foam material and solvent material and simultaneously remove coating material from the inside surface and the outside surface of the first end of the drum, and flowing the solvent away from the drum to carry away coating material removed from the inside surface and the outside surType: GrantFiled: November 29, 1999Date of Patent: October 8, 2002Assignee: Xerox CorporationInventors: Steven D. Bush, Michael J. Duggan, Kathryn A. Wallace, Henry T. Mastalski
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Patent number: 6461440Abstract: An article having a metallic surface treated with polymeric complexing agent is described. Particularly suitable polymeric complexing agents are phosphonoalkylated polyethyleneimines and/or carboxyalkylated polyethyleneimines and/or vinylimidazole polymers. As a rule, the treated metallic surface forms the total inner surface or a part of the inner surface of a process apparatus or of a container. The surface is protected by the treatment, in particular from the adhesion of polymer.Type: GrantFiled: March 31, 2000Date of Patent: October 8, 2002Assignee: BASF AktiengesellschaftInventors: Heinz Friedrich Sutoris, Gerhard Wagenblast, Jürgen Schröder, Harald Keller, Rainer Rahm, Jürgen Decker, Thomas Jaworek, Volker Schliephake
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Patent number: 6454871Abstract: A method of cleaning surfaces using a mixed phase cleaning mixture of an aqueous solution and a flow of gas sufficient to produce droplets of the liquid which are entrained by the gas for a time sufficient to clean tubing of various lengths and geometries and porous membranes to remove biofilm, debris and contaminants.Type: GrantFiled: December 17, 1999Date of Patent: September 24, 2002Assignee: Princeton Trade & Technology, Inc.Inventors: Mohamed Emam Labib, Ching-Yue Lai, Peter A. Materna, Geoffrey Lawrence Mahon
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Patent number: 6450182Abstract: The present invention cleans contaminants from pipes. The first step may be pulling a vacuum on the pipe to be cleaned. The pipe is then filled with a solvent, which is preferably a fluorocarbon solvent. After the pipe is filled with solvent, a cleaning solution is pumped at a high velocity through the pipe. The cleaning solution preferably comprises the fluorocarbon solvent, and a fluorosurfactant. The pipe is then rinsed with solvent. A particle counter is used to determine whether the solvent rinse contains an acceptably low number of particles. The solvent is then blown out of the pipe by a gas, such as dry air. A vacuum is then pulled on the pipe. Subsequently, a hot dry gas is pumped through the pipe to evaporate and remove any remaining solvent. The gas is preferably hot, dry air. The gas exiting from the pipe is then checked to confirm that it contains an acceptably low level of solvent vapor.Type: GrantFiled: April 10, 2001Date of Patent: September 17, 2002Assignee: Versar, Inc.Inventors: Gregory M. Fillipi, Bobby E. Walls, Kenneth Magerus, Jerry L. Gore