Patents by Inventor Juergen Schubert
Juergen Schubert 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: 8546591Abstract: The present invention relates to a process for the preparation of cis-2-(2-methylprop-1-enyl)-4-methyltetrahydropyran comprising the catalytic hydrogenation of 2-(2-methylprop-1-enyl)-4-methylenetetrahydropyran in the presence of hydrogen and a heterogeneous catalyst comprising ruthenium on a support and subsequently bringing the compounds obtained in this way into contact with a strongly acidic cation exchanger.Type: GrantFiled: December 17, 2008Date of Patent: October 1, 2013Assignee: BASF SEInventors: Lucia Koenigsmann, Juergen Schubert, Andreas Walch, Guenther Gottwald, Martin Kamasz, Ekkehard Schwab, Klaus-Peter Pfaff, Michael Slany
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Patent number: 8012253Abstract: Precipitated silicas and wax-coated precipitated silicas, their preparation, and their use as matting agents in inks and paints, the precipitated silicas characterized by: BET 350-550 m2/g DBP number 320-400 g/100 g d50 5-15 ?m, and tamped density 20-90 g/l.Type: GrantFiled: July 8, 2010Date of Patent: September 6, 2011Assignee: Evonik Degussa GmbHInventors: Juergen Schubert, Robert Kuhlmann, Hans Dieter Christian
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Publication number: 20100311988Abstract: The present invention relates to a process for the preparation of cis-2-(2-methylprop-1-enyl)-4-methyltetrahydropyran comprising the catalytic hydrogenation of 2-(2-methylprop-1-enyl)-4-methylenetetrahydropyran in the presence of hydrogen and a heterogeneous catalyst comprising ruthenium on a support and subsequently bringing the compounds obtained in this way into contact with a strongly acidic cation exchanger.Type: ApplicationFiled: December 17, 2008Publication date: December 9, 2010Applicant: BASF SEInventors: Lucia Koenigsmann, Juergen Schubert, Andreas Walch, Guenther Gottwald, Martin Kamasz, Ekkehard Schwab, Klaus-Peter Pfaff, Michael Slany
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Publication number: 20100288164Abstract: Highly efficient matting agents based on precipitated silicas and wax-coated precipitated silicas, their preparation, and their use in inks and paints.Type: ApplicationFiled: July 8, 2010Publication date: November 18, 2010Applicant: DEGUSSA AGInventors: Juergen SCHUBERT, Robert Kuhlmann, Hans Dieter Christian
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Patent number: 7816442Abstract: A surface-modified precipitated silica, useful as a matting agent, contains the silica having a polymer on a surface thereof. The surface-modified precipitated silica improves the transmission of a clear coating material, having a refractive index of nD20=1.4492 and containing 5% by weight of said silica, by at least 20%, in comparison to the same clear coating material containing 5% by weight of a reference precipitated silica surface treated with a polyethylene wax.Type: GrantFiled: November 13, 2007Date of Patent: October 19, 2010Assignee: Evonik Degussa GmbHInventors: Hans-Dieter Christian, Juergen Schubert, Uwe Schmeier
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Publication number: 20100222606Abstract: The present invention relates to a method of producing pure or enriched bisabolol by separating substance mixtures comprising bisabolol and farnesol by selective esterification of farnesol and subsequent distillative separation. The invention relates specifically to a method as specified above comprising the selective transesterification of mixtures comprising formyl-bisabolol and formyl-farnesol and subsequent distillative separation. The present invention furthermore relates to a method of producing farnesol esters.Type: ApplicationFiled: January 12, 2007Publication date: September 2, 2010Applicant: BASF SEInventors: Hansgeorg Ernst, Klaus-Peter Pfaff, Karl Beck, Jürgen Schubert, Günther Gottwald, Wolfgang Krause
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Patent number: 7686482Abstract: A light fixture shining light upward has a mast with a base or is attached to room or furniture systems. In order to improve the acoustics or a room, structure of a room, and/or for the indirect lighting of workplaces, a canopy element including a textile canopy and a frame stretching the textile canopy has at least one shaft-like element of the frame located eccentrically relative to the canopy, and is attached to the light-fixture mast or another part of the light fixture shining light upward.Type: GrantFiled: April 21, 2008Date of Patent: March 30, 2010Assignee: Ructurelab GmbHInventors: Jürgen Gendriesch, Jürgen Schubert, Alexander Prang
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Patent number: 7622617Abstract: The present invention relates to a process for preparing ?-bisabolol, comprising the reaction of farnesol in the presence of a ketone, of a sulfonic acid and of a further strong acid.Type: GrantFiled: October 26, 2006Date of Patent: November 24, 2009Assignee: BASF SEInventors: Klemens Massonne, Klaus-Peter Pfaff, Juergen Schubert, Guenther Gottwald
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Patent number: 7553889Abstract: A surface-modified precipitated silica, useful as a matting agent, contains the silica having a polymer on a surface thereof. The surface-modified precipitated silica improves the transmission of a clear coating material, having a refractive index of nD20=1.4492 and containing 5% by weight of said silica, by at least 20%, in comparison to the same clear coating material containing 5% by weight of a reference precipitated silica surface treated with a polyethylene wax.Type: GrantFiled: May 13, 2004Date of Patent: June 30, 2009Assignee: Degussa AGInventors: Hans-Dieter Christian, Jürgen Schubert, Uwe Schmeier
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Publication number: 20090101866Abstract: Highly efficient matting agents based on precipitated silicas and wax-coated precipitated silicas, their preparation, and their use in inks and paints.Type: ApplicationFiled: December 23, 2008Publication date: April 23, 2009Applicant: DEGUSSA AGInventors: Juergen SCHUBERT, Robert Kuhlmann, Hans Dieter Christian
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Patent number: 7513267Abstract: An umbrella has a shaft anchorable in or on the ground or in the air by an anchor and defining an axis and a canopy movable between an unfolded open position in which it is wavy and a folded position inclined to the axis, made of a preferably nonstretching membrane or fabric, formed of a whole number of polygonal sections with outer corners defining alternating high points and low points, traversed at a center by the shaft, centrally axially slidable along the shaft or centrally fixed on the shaft, and having an outer edge. An array of rods extending radially from and pivoted on the shaft extend in the open unfolded position from the shaft to the corners. These rods are wholly above the canopy and do not pass through the canopy.Type: GrantFiled: March 23, 2004Date of Patent: April 7, 2009Assignee: Structurelab GmbHInventors: Jürgen Gendriesch, Jürgen Schubert, Alexander Prang
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Patent number: 7488382Abstract: A precipitated silica characterized by BET 350-550 m2/g DBP number 350-400 g/100 g d50 5-15 ?m, and tamped density 20 to less than 70 g/l.Type: GrantFiled: September 8, 2003Date of Patent: February 10, 2009Assignee: Degussa AGInventors: Juergen Schubert, Robert Kuhlmann, Hans Dieter Christian
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Publication number: 20080269530Abstract: The present invention relates to a process for preparing ?-bisabolol, comprising the reaction of farnesol in the presence of a ketone, of a sulfonic acid and of a further strong acid.Type: ApplicationFiled: October 26, 2006Publication date: October 30, 2008Applicant: BASF SEInventors: Klemens Massonne, Klaus-Peter Pfaff, Juergen Schubert, Guenther Gottwald
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Publication number: 20080139756Abstract: A surface-modified precipitated silica, useful as a matting agent, contains the silica having a polymer on a surface thereof. The surface-modified precipitated silica improves the transmission of a clear coating material, having a refractive index of nD20=1.4492 and containing 5% by weight of said silica, by at least 20%, in comparison to the same clear coating material containing 5% by weight of a reference precipitated silica surface treated with a polyethylene wax.Type: ApplicationFiled: November 13, 2007Publication date: June 12, 2008Applicant: DEGUSSA AGInventors: Hans-Dieter Christian, Juergen Schubert, Uwe Schmeier
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Patent number: 6921781Abstract: The present invention provides a process, which includes: coating at least a portion of a surface of at least one silica particle with at least one wax, wherein the coating is carried out in at least one gas at a temperature above the melting point of the wax and below the decomposition temperature of the wax, to obtain at least one wax-coated silica particle. Other embodiments of the present invention provides processes for impregnating the silica particle with wax and uses of the wax-coated or wax-impregnated particles.Type: GrantFiled: August 23, 2001Date of Patent: July 26, 2005Assignee: Degussa AGInventors: Juergen Schubert, Klaus-Dieter Hellwig, Michael Pickel, Hans-Dieter Puetz
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Patent number: 6800267Abstract: Aluminum-doped precipitated silicas having a BET surface area of more than 300 m2/g and aluminum distributed uniformly in the silica particles are prepared by sequentially heating a mixture of water and sodium silicate at a temperature of from 70 to 86° C. and adding sulfuric acid until half of the sodium silicate is neutralized, then aging the mixture for a time of from 30 to 120 minutes, adjusting the pH of the mixture with sulfuric acid to a range of from 3.0 to 7.0, thereby precipitating the aluminum-doped silica, filtering the aluminum-doped silica from the mixture to form a filtercake and washing the filtercake, followed by drying and/or grinding the washed filtercake. An aluminum salt solution is metered into the mixture at step a) and/or step c). The aluminum-doped precipitated silicas of the present invention may be used in coatings for paper and other media intended for ink jet printing.Type: GrantFiled: August 29, 2001Date of Patent: October 5, 2004Assignee: Degussa AGInventors: Jürgen Schubert, Klaus-Dieter Hellwig, Astrid Muller
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Publication number: 20040047792Abstract: Highly efficient matting agents based on precipitated silicas and wax-coated precipitated silicas, their preparation, and their use in inks and paints.Type: ApplicationFiled: September 8, 2003Publication date: March 11, 2004Applicant: DEGUSSA AGInventors: Juergen Schubert, Robert Kuhlmann, Hans Dieter Christian
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Patent number: 6575815Abstract: In a process and device for calibrating throttle bores, in particular in injection valves for internal combustion engines, by means of hydroerosive machining of the throttle bore with a suspension, the actual through flow is compared to a predetermined reference through flow. When the actual—and reference through flows coincide, the hydroerosive machining is brought to an end. On the outflow side of the throttle bore, a counterpressure is built up, which prevents the cavitation of the fluid.Type: GrantFiled: September 5, 2001Date of Patent: June 10, 2003Assignee: Robert Bosch GmbHInventors: Juergen Schubert, Friedrich Weis
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Publication number: 20030038117Abstract: A method for producing bores in workpieces of electrically conductive material, in particular injection ports (11) in injection nozzles (10) is disclosed, in which method, by means of an erosion wire (12) forming an electrode, material in the workpiece forming the counterelectrode is removed in a targeted way by spark erosion. To produce bores of different cross-sectional shapes and/or a varying cross-sectional area over the length of the hole, the erosion wire (12) is actively excited to a defined vibration, and the form of vibration is established by targeted variation of the vibration excitation in accordance with the desired bore hole shape. A preferred apparatus for performing the method has a fastening unit (13), which receives the end (122) of the erosion wire (12) and which is driven by two actuators (14, 15) to execute a separate oscillating displacement along an x axis and a y axis (FIG. 1).Type: ApplicationFiled: July 23, 2002Publication date: February 27, 2003Inventors: Josef Pickel, Heribert Duetsch, Juergen Schubert, Stefan Kampmann, Werner Hassel
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Publication number: 20020061404Abstract: Aluminum-doped precipitated silicas having a BET surface area of more than 300 m2/g and aluminum distributed uniformly in the silica particles are prepared by sequentially heating a mixture of water and sodium silicate at a temperature of from 70 to 86° C. and adding sulfuric acid until half of the sodium silicate is neutralized, then aging the mixture for a time of from 30 to 120 minutes, adjusting the pH of the mixture with sulfuric acid to a range of from 3.0 to 7.0, thereby precipitating the aluminum-doped silica, filtering the aluminum-doped silica from the mixture to form a filtercake and washing the filtercake, followed by drying and/or grinding the washed filtercake. An aluminum salt solution is metered into the mixture at step a) and/or step c). The aluminum-doped precipitated silicas of the present invention may be used in coatings for paper and other media intended for ink jet printing.Type: ApplicationFiled: August 29, 2001Publication date: May 23, 2002Applicant: Degussa AgInventors: Juergen Schubert, Klaus-Dieter Hellwig, Astrid Mueller