Patents by Inventor Karl-Heinz Keim
Karl-Heinz Keim has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6802459Abstract: The invention provides a sprayer for spraying mold wall treatment agent or another liquid. The liquid is sprayed onto, for example, the walls of a mold or some other article. The sprayer includes a spray element body and a rotor mounted with freedom to rotate around an axis of rotation in the spray element body. An atomizing element is attached to one end of the rotor. A first feed line for mold wall treatment agent or another liquid to be sprayed is provided, as well as a second feed line for control air which directs mold wall treatment agent atomized by the atomizing element in the desired spray direction.Type: GrantFiled: February 24, 2003Date of Patent: October 12, 2004Assignee: Acheson Industries, Inc.Inventors: Hans-Dieter Renkl, Douwe Marten Kok, Thomas Junker, Karl-Heinz Keim
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Patent number: 6546994Abstract: In a process and in a device (10) for preparing the mold walls (12a, 12b) of a mold (12, 12) for the molding or shaping of a molded part after completion of the molding cycle and after removal of the molded part from the mold (12) to make the mold walls ready for the next molding cycle, the tempering of the mold walls (12a, 12b) and the coating of the walls with mold wall treatment agent are carried out independently of each other, i.e., without any time overlap, and in a controlled manner, preferably in a program-controlled manner. To apply the coating, preferably a spray element with centrifugal atomization and air control is used, the mold walls preferably being coated with essentially solvent-free mold wall treatment agent.Type: GrantFiled: November 6, 2000Date of Patent: April 15, 2003Assignee: Acheson Industries, Inc.Inventors: Hans-Dieter Renkl, Douwe Marten Kok, Thomas Junker, Karl-Heinz Keim
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Patent number: 6192968Abstract: In a process for preparing the mold walls (12a, 12b) of a mold (12, 12) for the molding or shaping of a molded part after completion of the molding cycle and after removal of the molded part from the mold (12) to make the mold walls ready for the next molding cycle, the tempering of the mold walls (12a, 12b) and the coating of the walls with mold wall treatment agent are carried out independently of each other, i.e., without any time overlap, and in a controlled manner, preferably in a program-controlled manner. To apply the coating, preferably a spray element with centrifugal atomization and air control is used, the mold walls preferably being coated with essentially solvent-free mold wall treatment agent.Type: GrantFiled: September 23, 1998Date of Patent: February 27, 2001Assignee: Acheson Industries, Inc.Inventors: Hans-Dieter Renkl, Douwe Marten Kok, Thomas Junker, Karl-Heinz Keim
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Patent number: 5785252Abstract: A two-component spray nozzle, in particular for die spraying devices, comprising a nozzle inlet end for working medium and blast air as well as a nozzle outlet and, a blast air guiding portion having at least one blast air supply line connectable with a supply member for blast air, and a working medium guiding portion having at least one working medium supply line connectable with a supply mechanism for the working medium.Type: GrantFiled: February 27, 1996Date of Patent: July 28, 1998Assignee: Acheson Industries, Inc.Inventors: Karl-Heinz Keim, Rudi Kober
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Patent number: 5603984Abstract: Process for the application of a liquid die wall treatment agent to areas of the die walls of a molding device by means of at least one spray element with metering of the flow rate of the die wall treatment agent by a metering valve. The metering valve having a metering cross section for the liquid die wall treatment agent and influenced by a secondary fluid including a metering valve with a valve membrane of variable shape, one side of which is acted on by the die wall treatment agent, while the other side is acted on by the secondary fluid, and the pressure on at least one side of the membrane is influenced by flow rate adjusting means, which results in variable flow rates and the variable flow rates are determined by different positions of the membrane.Type: GrantFiled: November 27, 1995Date of Patent: February 18, 1997Assignee: Acheson Industries, Inc.Inventors: Karl-Heinz Keim, Rudi Kober, Hans-Dieter Renkl
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Patent number: 5524829Abstract: A spray element for use with a mold sprayer of the type used to spray a mold prior to or between cycles of a manufacturing operation such as die-casting, drop forging or other operations involving the working of metals. The spray element includes a valve body having an internal elastic pretension. The valve body may be positioned in either an open or closed position in relation to a valve seat. A control pressure is applied, through a separate feed line, to the valve body to open and close the valve by forcing the valve body against or away from the valve seat. The spray element also includes a feed line supplying working air which cooperates with an atomizer attached to a feed line supplying a working medium to the atomizer to atomize the working medium when the valve body is actuated.Type: GrantFiled: May 31, 1994Date of Patent: June 11, 1996Assignee: Acheson Industries, Inc.Inventors: Karl-Heinz Keim, Rudi Kober, Hans-Dieter Renkl
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Patent number: 4982027Abstract: This invention relates to an improved process for the reprocessing of carbon containing wastes by pretreating the same thermally in the presence or absence of hydrogen, followed by hydrogenation of the pretreated material at elevated temperature and at least 200 bar hydrogen pressure.Type: GrantFiled: January 26, 1989Date of Patent: January 1, 1991Assignee: Rheinische Braunkohlenwerke AGInventors: Joachim Korff, Axel Giehr, Karl-Heinz Keim, Kurt Erdt
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Patent number: 4801305Abstract: The instant invention relates to fuels based on methanol and/or ethanol which contain additionally mixtures of C.sub.4 -hydrocarbons with C.sub.5 /C.sub.6 - and/or C.sub.5 -C.sub.7 -hydrocarbons and/or gasoline.Type: GrantFiled: April 30, 1986Date of Patent: January 31, 1989Assignee: Union Rheinische Braunkohlen Kraftstoff AGInventors: Heinrich Muller, Karl-Heinz Keim
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Patent number: 4590306Abstract: The instant invention relates to a process for the conversion of meta/para-cresol mixtures by catalytically methylating the meta/para-cresol mixtures in their ortho-positions, separating the 2,3,6- and 2,4,6-trimethylphenols formed and converting subsequently the 2,4,6-trimethylphenol in the presence of iron oxide(s) or catalysts which contain iron oxide(s) and at least one additional oxide, to a mixture of methyl phenols, which is essentially free from meta-substituted methylphenols.Type: GrantFiled: February 19, 1985Date of Patent: May 20, 1986Assignee: Union Rheinische Braunkohlen Kraftstoff AktiengesellschaftInventors: Joachim Korff, Karl-Heinz Keim
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Patent number: 4554388Abstract: This invention relates to a process for isomerization and transalkylation of alkylphenols and for phenol-derivatives in the presence of a catalyst comprising ironoxide (s) and at least one additional oxide and in the case of 2,4,6-trimethylphenol and 2,4-dimethylphenol as alkylphenol feed, of ironoxide (s) or of a catalyst comprising ironoxide (s) and at least one additional oxide.Type: GrantFiled: February 7, 1984Date of Patent: November 19, 1985Assignee: Rheinische Braunkohlenwerke AktiengesellschaftInventors: Karl-Heinz Keim, Joachim Korff
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Patent number: 4494960Abstract: In a process for the production of pumpable coal slurries for use in high-pressure hydrogenation, such an amount of finely divided coal is mixed into an oil which boils at a temperature of higher than about 200.degree. C., as not to exceed the limit of pumpability in respect of the slurry produced. The slurry is treated for about 0.5 to 15 minutes at a temperature of from 280.degree. to 450.degree. C., possibly under elevated pressure. Such a further amount of finely divided coal is mixed into the slurry after the above-indicated treatment, that the limit of pumpability is once again not exceeded. After the addition of the further amount of finely divided coal, the slurry can optionally be subjected again to heat treatment. This mode of operation permits the production of slurries with an elevated coal content, without coking occurring or pumpability being lost when the slurries are heated to hydrogenation temperature.Type: GrantFiled: July 5, 1984Date of Patent: January 22, 1985Assignee: Rheinische Braunkohlenwerke AGInventors: Wilfried Dolkemeyer, Karl-Heinz Keim, Ewald Meisenburg
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Patent number: 4406824Abstract: This invention relates to a process for reacting phenol, mono- and di-alkyl phenols having at least one free o-position with methanol and/or dimethyl ether in the gas phase to form o-substituted phenols in the presence of a catalyst of oxides of iron, chromium, silicon and at least one oxide of an alkaline-earth metal, lanthanum and manganese or in the presence of a catalyst of oxides of iron, chromium, a metal from the group comprising germanium, titanium, zirconium, tin, lead, and at least one oxide of an alkali metal, alkaline-earth metal, lanthanum and manganese.Type: GrantFiled: February 8, 1982Date of Patent: September 27, 1983Assignee: Union Rheinische Braunkohlen Kraftstoff AGInventors: Max Fremery, Karl-Heinz Keim, Joachim Korff
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Patent number: 4405815Abstract: Improved process for the production of acetaldehyde and ethanol by reacting methanol with carbon monoxide and hydrogen in the presence of a catalyst system containing cobalt, elemental iodine or bromine as promotor and a polydentate phosphorus, arsenic, antimony or bismuth compound using one or more metals from the group comprising chromium, molybdenum, tungsten, uranium, titanium, vanadium, iron and nickel as co-catalyst.Type: GrantFiled: November 30, 1981Date of Patent: September 20, 1983Assignee: Union Rheinische Braunkohlen Kraftstoff AktiengesellschaftInventors: Karl-Heinz Keim, Joachim Korff
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Patent number: 4400551Abstract: This invention relates to a process for the production of acetaldehyde and ethanol by reacting methanol with carbon monoxide and hydrogen at elevated temperature and pressure in the presence of a catalyst containing cobalt, biphosphine, biarsine or bistibine and hydrogen iodide and/or hydrogen bromide.Type: GrantFiled: August 19, 1981Date of Patent: August 23, 1983Assignee: Union Rheinische Braunkohlen Kraftstoff AktiengesellschaftInventors: Karl-Heinz Keim, Joachim Korff
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Patent number: 4359591Abstract: This invention relates to a process for reacting phenol, mono- and di-alkyl phenols having at least one free o-position with methanol and/or dimethyl ether in the gas phase to form o-substituted phenols in the presence of a catalyst of oxides of iron, chromium, silicon and at least one oxide of an alkaline-earth metal, lanthanum and manganese or in the presence of a catalyst of oxides of iron, chromium, a metal from the group comprising germanium, titanium, zirconium, tin, lead, and at least one oxide of an alkali metal, alkaline-earth metal, lanthanum and manganese.Type: GrantFiled: March 30, 1981Date of Patent: November 16, 1982Assignee: Union Rheinische Braunkohlen Kraftstoff AktiengesellschaftInventors: Max Fremery, Karl-Heinz Keim, Joachim Korff
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Patent number: 4319982Abstract: Oil-shale or tar sand is subjected to hydrogenating carbonization and the residue is passed into a combustion zone wherein residual coke in the residue is reacted with oxygen. At least part of the heat produced in the combustion zone is used to heat the hydrogen to be used for the carbonization step.Type: GrantFiled: May 28, 1980Date of Patent: March 16, 1982Inventors: Ewald Meisenburg, Karl-Heinz Keim
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Patent number: 4283571Abstract: Isomerization of o-cresol to m-cresol by contact with a crystalline aluminosilicate zeolite of the ZSM-type, having a silica to alumina ratio greater than 5, at a temperature of about 350.degree. to 450.degree. C.Type: GrantFiled: January 30, 1979Date of Patent: August 11, 1981Assignee: Union Rheinische Braunkohlen Kraftstoff AktiengesellschaftInventors: Karl-Heinz Keim, Reinhard Kiauk, Ewald Meisenburg