Patents by Inventor Stefan Karl

Stefan Karl 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).

  • Publication number: 20240043768
    Abstract: A method for the preparation of homo- and copolymers of alkyl (meth)acrylates having a low residual monomer content involves preparing a reaction mixture containing monomers, charging the reaction mixture, heating the reaction mixture, adding an additional monomer after initial monomer conversion, and optional further processing of the reaction mixture. The homo- and copolymers of alkyl (meth)acrylates obtained by this method as useful in lubricant applications.
    Type: Application
    Filed: December 17, 2021
    Publication date: February 8, 2024
    Applicant: Evonik Operations GmbH
    Inventors: Frank-Olaf Mähling, Maria Stimeier, Thomas Schimmel, Stefan Karl Maier, Sofia Sirak
  • Publication number: 20240042829
    Abstract: Thermal regulation circuit for a vehicle, said circuit comprising first (2) and second (4) heat exchangers that are situated in series along a direction of circulation of an air flow intended to pass through them in this order, said circuit comprising a third heat exchanger (6) intended to be passed through by an ambient air flow, said circuit being configured to allow a refrigerant to circulate in series in the first (2) and third (6) heat exchangers and a heat-transfer fluid to circulate in the second heat exchanger (4).
    Type: Application
    Filed: September 7, 2020
    Publication date: February 8, 2024
    Applicant: Valeo Systemes Thermiques
    Inventors: Bertrand Nicolas, Mohamed Yahia, Jugurtha Benouali, Stefan Karl, Yvan Lechat
  • Publication number: 20230403311
    Abstract: In an embodiment, a computing system can include one or more processors and one or more non-transitory computer-readable media that store instructions that, when executed by the one or more processors, cause the computing system to perform operations. The operations can include: receiving an internal encoder state of an encoder running on a first computing device being used to participate in a video conference currently in progress; receiving data indicative of a second computing device being used to join the video conference; compressing, based at least in part on receipt of the data, the internal encoder state to generate a compressed internal encoder state of the encoder; and/or transmitting the compressed internal encoder state to the second computing device to synchronize the internal encoder state of the encoder running on the first computing device with an internal decoder state of a decoder running on the second computing device.
    Type: Application
    Filed: August 15, 2023
    Publication date: December 14, 2023
    Inventors: Stefan Karl Holmer, Danil Chapovalov
  • Publication number: 20230383212
    Abstract: Acrylate-olefin copolymers and a method for the preparation of these copolymers are provided. Lubricant compositions can contain the aforementioned copolymers. The copolymers are useful as a lubricant additive or a synthetic base fluid in a lubricating oil composition, preferably in a gear oil composition, a transmission oil composition, a hydraulic oil composition, an engine oil composition, a marine oil composition, an industrial lubricating oil composition or in grease.
    Type: Application
    Filed: May 22, 2023
    Publication date: November 30, 2023
    Applicant: Evonik Operations GmbH
    Inventors: Emily Clare SCHWEIßINGER, Stefan Karl Maier, Katja Nothdurft, Yvonne Groß-Onnebrink, Dieter Janßen, Holger Pletsch, Stefan Hilf, Denise Kleinschmidt, Sebastian Babik
  • Publication number: 20230336594
    Abstract: In an embodiment, a computing system can include one or more processors and one or more non-transitory computer-readable media that store instructions that, when executed by the one or more processors, cause the computing system to perform operations. The operations can include: receiving an internal encoder state of an encoder running on a first computing device being used to participate in a video conference currently in progress; receiving data indicative of a second computing device being used to join the video conference; compressing, based at least in part on receipt of the data, the internal encoder state to generate a compressed internal encoder state of the encoder; and/or transmitting the compressed internal encoder state to the second computing device to synchronize the internal encoder state of the encoder running on the first computing device with an internal decoder state of a decoder running on the second computing device.
    Type: Application
    Filed: April 15, 2022
    Publication date: October 19, 2023
    Inventors: Stefan Karl Holmer, Danil Chapovalov
  • Publication number: 20230257673
    Abstract: A polyester is useful as a high viscosity base fluid. A method for its preparation involves isomerizing an alpha-olefin, epoxidizing an internal olefin, reacting an internal epoxide, and isolating the polyester. Lubricant compositions can contain such polyesters and the compositions are useful as automatic transmission fluids, manual transmission fluids, continuously variable transmission fluids, gear oil formulations, industrial gear oil formulations, axle fluid formulations, dual clutch transmission fluids, dedicated hybrid transmission fluids, or as hydraulic oils.
    Type: Application
    Filed: July 1, 2021
    Publication date: August 17, 2023
    Applicant: Evonik Operations GmbH
    Inventors: Stefan Karl MAIER, Peter Altenbuchner, Fabian Ziegler, Christiane Zatocil, Stefan Hilf, Emily Clare Schweißinger, Jens Elsner
  • Publication number: 20230257674
    Abstract: A polyester is useful as a high viscosity base fluid. A method for its preparation involves epoxidizing an alpha-olefin, reacting the alpha-epoxide or diol with a saturated linear aliphatic dicarboxylic acid, and isolating the polyester. Lubricant compositions can contain such polyesters and the compositions are useful as automatic transmission fluids, manual transmission fluids, continuously variable transmission fluids, gear oil formulations, industrial gear oil formulations, axle fluid formulations, dual clutch transmission fluids, dedicated hybrid transmission fluids, or as hydraulic oils.
    Type: Application
    Filed: July 1, 2021
    Publication date: August 17, 2023
    Applicant: Evonik Operations GmbH
    Inventors: Stefan Karl Maier, Peter Altenbuchner, Fabian Ziegler, Christiane Zatocil, Stefan Hilf, Emily Clare Schweißinger, Jens Elsner
  • Patent number: 11725737
    Abstract: Fluid circulation valve, the said valve comprising a housing (1) and a body (2) for circulation of fluid, the said body (2) being located at least partially within the said housing (1), the said body (2) being attached to the housing (1) and having a passage (4) for fluid between the said body (2) and the said housing (1), the said valve further comprising a control member (30) that can be actuated electromagnetically, the said control member (30) being able to move with respect to the said body (2) so as to selectively open or close the said passage (4), the said body (2) having at least locally a tubular configuration at the said passage (4), the said control member (30) being able to slide along the said body (2) at least at the said passage (4).
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: August 15, 2023
    Assignee: Valeo Systemes Thermiques
    Inventors: Stefan Karl, Mohamed Yahia, Jin-Ming Liu, Bertrand Nicolas, Roland Akiki
  • Publication number: 20230107653
    Abstract: A lighting device, comprising a funnel-shaped reflector including a plurality of first rods, a flexible material attached to the plurality of first rods, and a plurality of first connectors, wherein each of the plurality of first connectors is attached to the reflector at a position adjacent to one of the plurality of first rods; and a supporting structure configured to support at least one light source and including at least one socket, and a plurality of second rods, wherein each of the plurality of second rods has a first end attached to the at least one socket; and wherein a second end of each of the plurality of second rods is releasably connected to one of the first connectors, so that the connection position of the second end of each of the plurality of second rods and the correspondingly connected first connectors is adjustable.
    Type: Application
    Filed: October 5, 2022
    Publication date: April 6, 2023
    Inventor: Stefan Karle
  • Patent number: 11618797
    Abstract: The invention relates to acrylate-olefin copolymers and to a method for preparing these polymers. The present invention is also directed to lubricant compositions comprising these copolymers, and to the use of these copolymers as a lubricant additive or a synthetic base fluid in a lubricating oil composition, preferably in a gear oil composition, a transmission oil composition, a hydraulic oil composition, an engine oil composition, a marine oil composition, an industrial lubricating oil composition or in grease.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: April 4, 2023
    Assignee: Evonik Operations GmbH
    Inventors: Stefan Karl Maier, Dieter Janßen, Fabian Ziegler, Katrin Schöller, Stefan Hilf
  • Patent number: 11609227
    Abstract: A field apparatus (also referred to as a “biosampler”) is configured to automatically capture multiple samples of an aqueous medium (for example, water from a lake) and process same to preserve unstable analytes in the field. In this way, a set of samples from the aqueous medium can, for example, be captured at multiple points in time, processed with a biopreservative to preserve unstable analytes (for example, RNA) and then later collected for further analysis. Alternatively, multiple samples of the aqueous medium can be collected and preserved at one moment.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: March 21, 2023
    Assignee: EQO, Inc.
    Inventors: John Sanderson Wade Higley, Erika Nicole Schwarz Taylor, Stefan Karl Schuster, Paul David Higley
  • Publication number: 20230031154
    Abstract: A temperature management system for a vehicle is disclosed. The temperature management system includes a refrigerant circuit and a heat transfer fluid loop. The refrigerant circuit includes a compression device, an expansion member, a first heat exchanger configured to exchange heat between the refrigerant and an air flow external to a vehicle interior, a second heat exchanger configured to exchange heat between the refrigerant and the heat transfer fluid circulating in the loop, and a fourth heat exchanger configured to exchange heat between the refrigerant and an air flow inside the vehicle interior. The the heat transfer fluid loop includes, on a main line, the second heat exchanger and a primary radiator configured to exchange heat between the air flow external to the vehicle interior and the heat transfer fluid.
    Type: Application
    Filed: December 2, 2020
    Publication date: February 2, 2023
    Applicant: Valeo Systemes Thermiques
    Inventors: Mohamed Yahia, Stefan Karl, Bertrand Nicolas
  • Publication number: 20230019811
    Abstract: The present invention relates to a circuit (1) for a vehicle configured to be traversed by a coolant (FR). The circuit (1) comprises a main branch (2) comprising a main heat exchanger (3) comprising at least one inlet (100; 101, 102) for coolant (FR). The circuit (1) comprises a first branch (4) and a second branch (5) that extend between a point of divergence (6) and a point of convergence (7). The first branch (4) comprises a first compression device (9), a first expansion member (8) and a first heat exchanger (10) configured to thermally treat an electrical storage device (11) of the vehicle. The second branch (5) comprises a second compression device (13), a second expansion member (12) and a second heat exchanger (14) configured to thermally treat a passenger compartment of the vehicle. The circuit (1) comprises a high-pressure line (200) that comprises a first portion (201) extending between an outlet (31) of the first compression device and the inlet (100; 101, 102).
    Type: Application
    Filed: December 2, 2020
    Publication date: January 19, 2023
    Applicant: Valeo Systemes Thermiques
    Inventors: Mohamed Yahia, Stefan Karl, Bertrand Nicolas
  • Publication number: 20220372388
    Abstract: Low molecular weight polyalkyl acrylate polymers can be used as high viscosity base fluids. A corresponding method can be used for their preparation. Lubricant compositions may contain such low molecular weight polyalkyl acrylate polymers and the compositions may be used as automatic transmission fluids, manual transmission fluids, continuously variable transmission fluids, gear oil formulations, industrial gear oil formulations, axle fluid formulations, dual clutch transmission fluids, dedicated hybrid transmission fluids, or hydraulic oils.
    Type: Application
    Filed: December 12, 2019
    Publication date: November 24, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Stefan Karl Maier, Michael Neusius, Qi Xiao, Gabriela Fedor, Stefan Hilf, Frank-Olaf Mähling
  • Publication number: 20220260234
    Abstract: A lighting device, such as a softbox 1 used for illumination in film locations, comprises a self-supporting funnel-shaped reflector 3 having a proximal edge 5 and a distal edge 7. A circumferential length of the funnel-shaped reflector at the proximal edge 5 is smaller than a circumferential length of the funnel-shaped reflector at the distal edge 7. The funnel-shaped reflector 3 is formed of a wall material 19 and the wall material is a thermoplastic material. The funnel-shaped reflector 3 includes plural corner lines 17 extending between the proximal edge 5 and distal edge 7, and wherein the corner lines 17 are formed by thermoplastic deformation of the wall material 19.
    Type: Application
    Filed: February 14, 2022
    Publication date: August 18, 2022
    Inventor: Stefan Karle
  • Publication number: 20220195091
    Abstract: The invention relates to acrylate-olefin copolymers and to a method for preparing these polymers. The present invention is also directed to lubricant compositions comprising these copolymers, and to the use of these copolymers as a lubricant additive or a synthetic base fluid in a lubricating oil composition, preferably in a gear oil composition, a transmission oil composition, a hydraulic oil composition, an engine oil composition, a marine oil composition, an industrial lubricating oil composition or in grease.
    Type: Application
    Filed: December 6, 2021
    Publication date: June 23, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Stefan Karl Maier, Dieter Janßen, Fabian Ziegler, Katrin Schöller, Stefan Hilf
  • Patent number: 11339346
    Abstract: The invention is related to a composition for use in hydraulic systems of an aircraft. The composition typically comprises an adipic acid-based polyester in a phosphate ester base stock substantially consisting of trialkyl phosphates.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: May 24, 2022
    Assignee: Evonik Operations GmbH
    Inventors: Stefan Karl Maier, Nicolai Kolb, Michael Neusius
  • Publication number: 20220144089
    Abstract: A method and system for displaying a warning message to warn of insufficient available drive power for use in an electric vehicle, comprising the steps of a detection of measurement values for determining a latest output of an energy storage device of the electric vehicle via a detection unit, a determination of a latest peak output and/or continuous output of the energy storage device on the basis of the detected measurement values via a processing unit, a comparison of the latest peak output and/or continuous output with a threshold value of the peak output and/or continuous output via the processing unit, a display of a warning message by a display when the peak output and/or continuous output falls below the threshold value, wherein the method is not initiated until an attempt is made to establish driving readiness.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Applicant: Volkswagen Aktiengesellschaft
    Inventors: Robert Michael HEINEMANN, Issa NEMATI, Stefan Karl SAMSON
  • Publication number: 20220100056
    Abstract: A softbox for being mounted to spotlight door flaps includes plural flat sides, at least two of which are mutually non-adjacent, wherein pockets for accommodating the spotlight door flaps are arranged on the at least two mutually non-adjacent flat sides of the softbox, wherein the pockets are each provided with an insertion opening, and wherein the insertion openings are configured to be reversibly variable with regard to their widths. The softbox includes at least two side walls, and further includes a light-baffle arranged between the at least two side walls of the softbox, wherein the light-baffle includes at least two translucent planes inclined to one another, and wherein the plural translucent planes together form a shape having a base facing towards the spotlight.
    Type: Application
    Filed: December 8, 2021
    Publication date: March 31, 2022
    Inventor: Stefan Karle
  • Publication number: 20220065352
    Abstract: Fluid circulation valve, the said valve comprising a housing (1) and a body (2) for circulation of fluid, the said body (2) being located at least partially within the said housing (1), the said body (2) being attached to the housing (1) and having a passage (4) for fluid between the said body (2) and the said housing (1), the said valve further comprising a control member (30) that can be actuated electromagnetically, the said control member (30) being able to move with respect to the said body (2) so as to selectively open or close the said passage (4), the said body (2) having at least locally a tubular configuration at the said passage (4), the said control member (30) being able to slide along the said body (2) at least at the said passage (4).
    Type: Application
    Filed: January 7, 2020
    Publication date: March 3, 2022
    Applicant: Valeo Systemes Thermiques
    Inventors: Stefan Karl, Mohamed Yahia, Jin-Ming Liu, Bertrand Nicolas, Roland Akiki