Patents by Inventor Lars Fischer
Lars Fischer 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: 11947097Abstract: A bandpass filter for light has variable lower and upper cut-off wavelengths. The bandpass filter comprises an areal long-pass filter defining the variable lower cut-off wavelength and an areal short-pass filter defining the variable upper cut-off wavelength. The long-pass filter has different lower cut-off wavelengths in different first area regions which follow to one another in a first direction, and the short-pass filter has different upper cut-off wavelengths in different second area regions which follow to one another in a second direction. The long-pass filter and the short-pass filter are connected in series and spatially fixed relative to one another. The first direction and the second direction are oriented crosswise to one another.Type: GrantFiled: April 6, 2021Date of Patent: April 2, 2024Assignee: ABBERIOR INSTRUMENTS GMBHInventors: Joachim Fischer, Matthias Henrich, Andreas Schoenle, Lars Kastrup
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Publication number: 20240092720Abstract: An anti-fouling composition, and uses thereof in the industrial preparation of ethylenically unsaturated monomers comprising at least one heteroatom, such as acrylic monomers are disclosed.Type: ApplicationFiled: February 4, 2021Publication date: March 21, 2024Applicant: SPECIALTY OPERATIONS FRANCEInventors: Jing Jiang, David Vanzin, Rodolphe Sapey-Triomphe, Shujing Cheng, Lars Fischer
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Publication number: 20240097537Abstract: The disclosure relates to a generator segment of a segmented generator, in particular of a permanently excited segmented rotary generator, of a wind turbine, comprising a rotor segment of a rotor, and a stator segment of a stator, wherein the rotor segment and the stator segment in an operation position are disposed so as to be mutually spaced apart in a radial direction by an air gap, and are disposed so as to be mutually spaced apart in an axial direction by an axial spacing; wherein the rotor segment and the stator segment are able to be disposed and/or displaced relative to one another along a rotation axis by the axial spacing, between an operation position and a transport position that is different from the operation position.Type: ApplicationFiled: December 17, 2021Publication date: March 21, 2024Inventors: Manuel Feith, Wojciech Giengiel, Stephan Jöckel, Alexander Philipp, Sebastian Bauer, Lars Fischer, Wilko Gudewer, Andreas Recktenwald
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Publication number: 20240097515Abstract: A rotor segment of a segmented generator, in particular of a permanently excited segmented rotary generator, of a wind turbine, comprises a magnet carrier segment with a rotor circumferential face, in particular a rotor external circumferential face, which in a circumferential direction extends between a first and second separation interface by way of a segment length; the rotor circumferential face having a first separation interface portion having a first length proceeding from the first separation interface in the circumferential direction toward the second separation interface; and a second separation interface portion having a second length proceeding from the second separation interface in the circumferential direction toward the first separation interface; and a connection portion having a third length extending between the first and second separation interface; wherein in each case a reinforcement device for reinforcing the magnet carrier segment is disposed on the rotor circumferential face in the reType: ApplicationFiled: December 17, 2021Publication date: March 21, 2024Inventors: Manuel Feith, Wojciech Giengiel, Stephan Jöckel, Andreas Sattler, Lars Fischer, Alexander Philipp
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Publication number: 20210387151Abstract: The present invention relates to new lightly colored prills of hydroquinone. More particularly, the invention provides a new method for preparing said lightly colored prills of hydroquinone. The invention also relates to said prills of hydroquinone obtained by said new method.Type: ApplicationFiled: December 3, 2019Publication date: December 16, 2021Inventors: Rodolphe SAPEY-TRIOMPHE, Lars FISCHER, David VANZIN
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Patent number: 11046631Abstract: The invention relates to a novel solid form of diphenol compound. A process for the preparation of diphenol prills having a spherical shape is disclosed. Said process comprising providing a molten composition comprising from 50 to 100 wt. % of a diphenol compound or a mixture of at least two diphenol compounds, and less than 0.1 wt. % of water; forcing said molten composition through at least one droplet generator means to form droplets; and cooling said droplets to form solid diphenol prills. The diphenol prills obtainable by said process are also one subject-matter of the invention.Type: GrantFiled: February 21, 2018Date of Patent: June 29, 2021Assignee: RHODIA OPERATIONSInventors: Cédric Humblot, David Vanzin, Lars Fischer, Rodolphe Sapey-Triomphe
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Patent number: 10766848Abstract: The present invention relates to the use of at least two phenol derivatives jointly with at least one ancillary polymerization inhibitor which is different from these two phenol derivatives and particularly is selected from phenol derivatives, amine derivatives, thiazine derivatives, nitroso compounds, N-oxyl derivatives, metal salts, quinone derivatives, and mixtures thereof, to inhibit the polymerization of ethylenically unsaturated monomers comprising at least one heteroatom, it being also possible for a dispersant to be incorporated. The present invention also relates to a corresponding polymerization-inhibiting composition and to the corresponding process for preparing ethylenically unsaturated monomers comprising at least one heteroatom, and particularly acrylic monomers.Type: GrantFiled: September 7, 2015Date of Patent: September 8, 2020Assignee: RHODIA OPERATIONSInventors: Christelle Chretien, Karel Vits, Lars Fischer, Yan Shi
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Patent number: 10669056Abstract: A process for unloading a container containing an oxidizable compound having a melting point Tm greater than 15° C. is described. This process comprises the steps consisting in heating the container using a heating means until the oxidizable compound is liquid, the temperature of the heating means remaining less than or equal to Tm+105° C., and then unloading the oxidizable compound in the liquid state. A process for handling such an oxidizable compound, comprising this unloading step, and also a device enabling this process to be carried out, are also proposed.Type: GrantFiled: September 15, 2015Date of Patent: June 2, 2020Assignee: Rhodia OperationsInventors: Lars Fischer, Jacques Cavezzan, Jean-François Thome
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Publication number: 20200031749Abstract: The invention relates to a novel solid form of diphenol compound. A process for the preparation of diphenol prills having a spherical shape is disclosed. Said process comprising providing a molten composition comprising from 50 to 100 wt. % of a diphenol compound or a mixture of at least two diphenol compounds, and less than 0.1 wt. % of water; forcing said molten composition through at least one droplet generator means to form droplets; and cooling said droplets to form solid diphenol prills. The diphenol prills obtainable by said process are also one subject-matter of the invention.Type: ApplicationFiled: February 21, 2018Publication date: January 30, 2020Inventors: Cédric HUMBLOT, David VANZIN, Lars FISCHER, Rodolphe SAPEY-TRIOMPHE
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Publication number: 20190023641Abstract: The present invention relates to the use of at least two phenol derivatives jointly with at least one ancillary polymerization inhibitor which is different from these two phenol derivatives and particularly is selected from phenol derivatives, amine derivatives, thiazine derivatives, nitroso compounds, N-oxyl derivatives, metal salts, quinone derivatives, and mixtures thereof, to inhibit the polymerization of ethylenically unsaturated monomers comprising at least one heteroatom, it being also possible for a dispersant to be incorporated. The present invention also relates to a corresponding polymerization-inhibiting composition and to the corresponding process for preparing ethylenically unsaturated monomers comprising at least one heteroatom, and particularly acrylic monomers.Type: ApplicationFiled: September 7, 2015Publication date: January 24, 2019Inventors: Christelle CHRETIEN, Karel VITS, Lars FISCHER, Yan SHI
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Publication number: 20170275039Abstract: A process for unloading a container containing an oxidizable compound having a melting point Tm greater than 15° C. is described. This process comprises the steps consisting in heating the container using a heating means until the oxidizable compound is liquid, the temperature of the heating means remaining less than or equal to Tm+105° C., and then unloading the oxidizable compound in the liquid state. A process for handling such an oxidizable compound, comprising this unloading step, and also a device enabling this process to be carried out, are also proposed.Type: ApplicationFiled: September 15, 2015Publication date: September 28, 2017Inventors: Lars FISCHER, Jacques CAVEZZAN, Jean-François THOME
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Patent number: 9605203Abstract: The invention describes a composition that inhibits the polymerization of ethylenically unsaturated monomers, including at least 98% by weight of 4-tert-butylcatechol (4-TBC), 0.03% to 0.2% by weight of catechol (PC), and at least one impurity selected among 3-tert-butylcatechol, tert-butylhydroquinone, 3,5-di-tert-butylcatechol and mixture thereof, the total quantity of said impurities and of the PC being 0.1% to 0.8% by weight of said composition. The invention also describes a method for removing said polymerization-inhibiting composition present in a mixture including at least one ethylenically unsaturated monomer.Type: GrantFiled: September 11, 2014Date of Patent: March 28, 2017Assignee: Rhodia OperationsInventors: Christelle Chretien, Lars Fischer, Stephan Verdier, Jacques Cavezzan
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Publication number: 20160230089Abstract: The invention describes a composition that inhibits the polymerization of ethylenically unsaturated monomers, including at least 98% by weight of 4-tert-butylcatechol (4-TBC), 0.03% to 0.2% by weight of catechol (PC), and at least one impurity selected among 3-tert-butylcatechol, tert-butylhydroquinone, 3,5-di-tert-butylcatechol and mixture thereof, the total quantity of said impurities and of the PC being 0.1% to 0.8% by weight of said composition. The invention also describes a method for removing in said polymerization-inhibiting composition present in a mixture including at least one ethylenically unsaturated monomer.Type: ApplicationFiled: September 11, 2014Publication date: August 11, 2016Inventors: Christelle CHRETIEN, Lars FISCHER, Stephan VERDIER, Jacques CAVEZZAN
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Patent number: 8637719Abstract: The invention concerns a catalyst comprising a porous support, palladium, at least one metal selected from the group constituted by alkalis and alkaline-earths, in which: the specific surface area of the porous support is in the range 50 to 210 m2/g; the palladium content in the catalyst is in the range 0.05% to 2% by weight; at least 80% by weight of the palladium is distributed in a crust at the periphery of the support, the thickness of said crust being in the range 20 to 200 ?m; the metallic dispersion D is in the range 25% to 70%; the density of the palladium particles in the crust is in the range 1500 to 4100 particles of palladium per ?m2; and said alkali and/or alkaline-earth metal is distributed homogeneously across the support. The invention also concerns the preparation of the catalyst and its use in selective hydrogenation.Type: GrantFiled: October 24, 2008Date of Patent: January 28, 2014Assignee: IFP Energies nouvellesInventors: Lars Fischer, Carine Petit-Clair, Cecile Thomazeau, Lois Sorbier, Catherine Verdon
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Patent number: 8637425Abstract: A process is described for preparing a catalyst comprising at least one porous support and at least one metallic phase containing nickel and tin in a proportion such that the Sn/Ni molar ratio is in the range 0.01 to 0.2, said process comprising at least the following steps in succession: a) depositing nickel on at least said support in order to obtain a supported nickel-based monometallic catalyst; b) reducing said monometallic catalyst in the presence of at least one reducing gas; c) depositing, in the gas phase and in the presence of at least one reducing gas, at least one organometallic tin compound onto said reduced monometallic catalyst; and d) activating the solid derived from said step c) in the presence of at least one reducing gas.Type: GrantFiled: August 16, 2010Date of Patent: January 28, 2014Assignee: IFP Energies nouvellesInventors: Lars Fischer, Anne-Claire Dubreuil, Cecile Thomazeau, Layane Deghedi, Jean-Pierre Candy, Jean-Marie Basset, Fabienne Le Peltier
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Patent number: 8586808Abstract: The invention concerns a catalyst comprising nickel on an aluminum oxide support. The aluminum oxide support has, in the calcined state, a diffractogram obtained by X ray diffractometry comprising peaks which correspond to the following interplanar spacings and relative intensities: Interplanar spacings Relative intensities d (10?10 m ) I/I0 (%) 5.03 to 5.22 1-5 4.56 to 4.60 ?1-10 4.06 to 4.10 1-5 2.80 to 2.85 ?5-20 2.73 15-35 2.60 ?5-10 2.43 35-40 2.29 30-40 1.99 60-95 1.95 25-50 1.79 ?1-10 1.53 ?5-10 1.51 ?5-10 1.41 40-60 1.39 100 1.23 to 1.26 1-5 1.14 ?5-10 1.11 1-5 1.04 1-5 1.00 ?5-10 0.97 ?1-5.Type: GrantFiled: January 30, 2009Date of Patent: November 19, 2013Assignee: IFP Energies NouvellesInventors: Anne Claire Dubreuil, Lars Fischer, Bernadette Rebours, Renaud Revel, Cecile Thomazeau
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Patent number: 8476186Abstract: The invention concerns a catalyst comprising palladium on an oxide of aluminum support. In the calcined state, the oxide of aluminum support has a diffractogram obtained by X ray diffraction comprising peaks which correspond to the following interplanar spacings and relative intensities: Interplanar spacings d (10?10 m) Relative intensities ±5 × 10?3 d I/I0 (%) 4.54? ?3-10 2.70-2.75 ?5-25 2.41? 35-45 2.28? 15-30 2.10? ?0-10 1.987 30-50 1.958 30-50 1.642 0-5 1.519 10-20 1.Type: GrantFiled: June 19, 2009Date of Patent: July 2, 2013Assignee: IFP Energies NouvellesInventors: Antoine Fecant, Lars Fischer, Bernadette Rebours, Renaud Revel, Cecile Thomazeau
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Patent number: 8309782Abstract: The invention relates to a process for dehydrogenation of a hydrocarbon feedstock in the presence of a catalyst that comprises a noble metal M that is selected from the group that consists of platinum, palladium, rhodium, and iridium, at least one promoter X1 that is selected from the group that consists of tin, germanium, and lead, and optionally a promoter X2 that is selected from the group that consists of gallium, indium and thallium, an alkaline or alkaline-earth compound and a porous substrate, in which the atomic ratio X1/M and optionally X2/M is between 0.3 and 8, the Hir/M ratio that is measured by hydrogen adsorption is greater than 0.40, and the bimetallicity index BMI that is measured by hydrogen/oxygen titration is greater than 108.Type: GrantFiled: December 7, 2007Date of Patent: November 13, 2012Assignee: IFP Energies nouvellesInventors: Fabienne Le Peltier, Sylvie Lacombe, Christophe Chau, Stephane Morin, Lars Fischer, Renaud Revel
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Patent number: 8178735Abstract: A process for the treatment of an olefinic fraction, using a catalyst prepared by a process comprising: a) The preparation of a colloidal oxide suspension of a first metal M1 by the neutralization of a basic solution by an acidic mineral solution that contains the precursor of the metal M1, b) Bringing into contact the precursor of the promoter M2, either directly in its crystallized form or after dissolution in aqueous phase, with the colloidal suspension that is obtained in stage a), c) Bringing into contact the colloidal suspension that is obtained in stage b) with the substrate, d) Drying at a temperature of between 30° C. and 200° C., under a flow of air.Type: GrantFiled: April 25, 2011Date of Patent: May 15, 2012Assignee: IFP Energies nouvellesInventors: Vincent Coupard, Denis Uzio, Carine Petit-Clair, Lars Fischer, Frederic Portejole
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Publication number: 20120016170Abstract: A process is described for preparing a spherical material comprising a porous core coated with a continuous and homogeneous porous layer, the degree of attrition of said material being less than 20%. Said preparation process comprises a) bringing a bed of spherical particles constituting the core of said material into contact with a suspension containing an inorganic binder in order to form a solid having a pre-layer around said core; b) bringing the solid derived from step a) into contact, in a stream of hot air, with a powder constituted by spherical particles of an inorganic oxide and a suspension containing an inorganic binder and an organic binder in order to form a solid the core of which is coated with at least one continuous and homogeneous porous layer, the ratio of the (mass of anhydrous inorganic binder/volume of powder particles) being in the range 0.05 to 1 g.mL?1; c) drying the solid derived from said step b); and d) calcining the solid derived from said step c).Type: ApplicationFiled: August 19, 2009Publication date: January 19, 2012Applicant: IFP Energies nouvellesInventors: Samy Ould-Chikh, Antoine Fecant, Loic Rouleau, Lars Fischer, Mehrdji Hemati