Patents by Inventor Stefan Engels

Stefan Engels 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: 20240308532
    Abstract: A method for redundant monitoring of driving functions of an automatedly driving motor vehicle, with a first control system. The first control system includes a first control unit, a first actual-value sensor and a first controller. Based on ascertained actual values of the first actual-value sensor and control specification values, the first control unit controls the first controller with control values. A redundant second control system includes a second control unit, a second actual-value sensor, and a second controller. The second controller is controllable via the second control unit with control values ascertained based on ascertained actual values of the second actual-value sensor and control specification values. The method includes measuring the actual values using the second actual-value sensor, comparing the actual values to the control specification values for the second control unit, determining a deviation, and ascertaining a defect in the first control system depending on the deviation.
    Type: Application
    Filed: March 7, 2024
    Publication date: September 19, 2024
    Inventors: Stefan Engels, Zhiyi Xu
  • Publication number: 20220056296
    Abstract: A conductive ink jet printing ink composition is provided comprising the following components: (a) 60-84.5 wt.-% of an organic solvent or a mixture of organic solvents, (b) 0.5-5 wt.-% of a binder, wherein the binder comprises ethyl cellulose in an amount of a range of 85 to 100 wt.-%, based on the total amount of the binder, (c) 15-25 wt.-% of silver particles having a d50-value in a range of 130 nm to 800 nm, (d) optionally antioxidizing agents, (e) optionally a dispersing agent for the silver particles different from binder (b), wherein all amounts are referred to the total amount of the ink jet printing ink composition, if not defined otherwise.
    Type: Application
    Filed: December 12, 2019
    Publication date: February 24, 2022
    Inventors: Volker Jordan, Stefan Engel, Wolfgang Herzing
  • Publication number: 20210115280
    Abstract: An aqueous ink or lacquer composition, in particular for coating or printing a substrate, including at least one thickener, at least one binder, at least one solvent and water, wherein the at least one thickener is at least one associative thickener, and the at least one binder is a compound which differs from the at least one associative thickener and is selected from the group consisting of polyacrylate, urethane acrylate, polyurethane, acrylonitrile-butadiene rubber (NBR), acrylonitrile-butadiene-styrene rubber (ABS), methacrylate-butadiene-styrene (MBS), methyl methacrylate-butadiene-styrene (MBS), and mixtures of at least two of the binders mentioned.
    Type: Application
    Filed: October 15, 2020
    Publication date: April 22, 2021
    Inventors: Stefan Engel, Jochen Sommerluksch, Regina Zelbel, Rabia Kücük
  • Patent number: 10727755
    Abstract: A method of controlling at least one switching module having commutation cells which are associated with a regulating winding of a regulating transformer, the commutation cells including: a first and second switching element each having two thyristors in antiparallel connection.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: July 28, 2020
    Assignee: MASCHINENFABRIK REINHAUSEN GMBH
    Inventors: Stefan Engel, Rik W. de Doncker
  • Patent number: 10675182
    Abstract: A hollow needle for an ophthalmic surgical instrument for in-vivo fragmentation of organic lenses by means of ultrasound, comprising a connection region (2) formed on the proximal end (1) for coupling onto the instrument and a needle head (4) formed on the distal end (3) having an effective surface (5) for emitting ultrasound waves, wherein a suction channel (6) for suctioning lens fragments extends in the axial direction through the hollow needle, the opening (7) of which is delimited by the effective surface (5), characterized in that the suction channel in the needle head (4) is formed in a conical manner at least partially running in the direction of the proximal end (1), and in that sections (9) running over this region (1) in the axial direction are formed in the wall (10) of the suction channel.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: June 9, 2020
    Assignee: Geuder AG
    Inventors: Marc Wolschendorf, Stefan Engel, Dieter Frauenfeld, René Draheim, Volker Geuder
  • Publication number: 20200136607
    Abstract: A method of controlling at least one switching module having commutation cells which are associated with a regulating winding of a regulating transformer, the commutation cells including: a first and second switching element each having two thyristors in antiparallel connection.
    Type: Application
    Filed: November 15, 2017
    Publication date: April 30, 2020
    Inventors: Stefan Engel, W. Rik de Doncker
  • Publication number: 20180110649
    Abstract: A hollow needle for an ophthalmic surgical instrument for in-vivo fragmentation of organic lenses by means of ultrasound, comprising a connection region (2) formed on the proximal end (1) for coupling onto the instrument and a needle head (4) formed on the distal end (3) having an effective surface (5) for emitting ultrasound waves, wherein a suction channel (6) for suctioning lens fragments extends in the axial direction through the hollow needle, the opening (7) of which is delimited by the effective surface (5), characterized in that the suction channel in the needle head (4) is formed in a conical manner at least partially running in the direction of the proximal end (1), and in that sections (9) running over this region (1) in the axial direction are formed in the wall (10) of the suction channel.
    Type: Application
    Filed: February 2, 2016
    Publication date: April 26, 2018
    Inventors: Marc Wolschendorf, Stefan Engel, Dieter Frauenfeld, René Draheim, Volker Geuder
  • Patent number: 9825532
    Abstract: A DC-DC converter having a primary side comprising at least three actively switched primary voltage bridges with several active switches for converting a DC input voltage into primary alternating voltages for each of the primary voltage bridges, and having a secondary side comprising at least three actively switched secondary voltage bridges with several active switches for converting the secondary alternating voltages into a shared DC output voltage for each of the secondary voltage bridges. The primary and secondary alternating voltages are each shifted by a phase angle ? with the periods T, and each of the primary and secondary voltage bridges is coupled to an appertaining phase via one or more transformers.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: November 21, 2017
    Assignee: FLEXIBLE ELEKTRISCHE NETZE FEN GMBH
    Inventors: Stefan Engel, Ir. Rik W. A. A. De Doncker
  • Publication number: 20170158894
    Abstract: An ink jet printer ink comprising effect pigments and organic solvents or solvent mixtures, wherein the effect pigments comprise a) aluminum effect pigments having a mean thickness in a range of 10 to 100 ?m and a d98 value of the cumulative frequency distribution of the volume-averaged size distribution function of less than 15 ?m and/or b) pearlescent pigments having a d90 value of the cumulative frequency distribution of the volume-averaged size distribution in a range of 3.5 to 15 ?m. The viscosity of the ink jet printer ink is 1 to mPa*s and the weight ratio of effect pigment to binder is 2 to 15. The invention further relates to the use of the ink jet printer ink.
    Type: Application
    Filed: February 17, 2017
    Publication date: June 8, 2017
    Inventors: Michael Becker, Stefan Engel
  • Patent number: 9151360
    Abstract: A metal connection plate of a chain link of an energy chain, which metal connecting plate has two ends, wherein one end has first elements and the other end has second elements, wherein the first elements can be inserted into the second elements of a further connecting plate in such a way that the connecting plates are rotatably connected to each other. The first and second elements are each formed by a hole having a border. The borders form stop surfaces corresponding to each other, which stop surfaces protrude substantially perpendicularly to an extent to the connecting plate.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: October 6, 2015
    Assignee: Tsubaki Kabelschlepp GmbH
    Inventors: Thomas Ameis, Stefan Engel, Mark Daub, Sven Kratzke, Ulrich Wagener
  • Patent number: 9045465
    Abstract: Benzoyl derivatives of the formula I where the variables have the following meanings: R1, R2 are hydrogen, nitro, halogen, cyano, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio, haloalkylthio, alkylsulfinyl, haloalkylsulfinyl, alkylsulfonyl or C1-C6-haloalkylsulfonyl; R3 is hydrogen, halogen or alkyl; R4, R5 are hydrogen, halogen, cyano, nitro, alkyl, alkoxy, alkylthio, dialkylamino, phenyl or carbonyl, it being possible for the 6 last-mentioned radicals to be substituted; X is O, S, NR9, CO or CR10R11; Y is O, S, NR12, CO or CR13R14; R15 is pyrazole which is unsubstituted or substituted, linked in the 4-position and has attached to it in the 5-position a hydroxyl or sulfonyloxy radical; and the agriculturally useful salts thereof; processes and intermediates for the preparation of the 3-heterocyclyl-substituted benzoyl derivatives; compositions comprising them; and the use of these derivatives or compositions comprising them for controlling undesirable plants.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: June 2, 2015
    Assignee: BASF SE
    Inventors: Wolfgang von Deyn, Regina Luise Hill, Uwe Kardorff, Ernst Baumann, Stefan Engel, Guido Mayer, Matthias Witschel, Michael Rack, Norbert Götz, Joachim Gebhardt, Ulf Miβlitz, Helmut Walter, Karl-Otto Westphalen, Martina Otten, Joachim Rheinheimer
  • Publication number: 20150146455
    Abstract: A DC-DC converter having a primary side comprising at least three actively switched primary voltage bridges with several active switches for converting a DC input voltage into primary alternating voltages for each of the primary voltage bridges, and having a secondary side comprising at least three actively switched secondary voltage bridges with several active switches for converting the secondary alternating voltages into a shared DC output voltage for each of the secondary voltage bridges. The primary and secondary alternating voltages are each shifted by a phase angle ? with the periods T, and each of the primary and secondary voltage bridges is coupled to an appertaining phase via one or more transformers.
    Type: Application
    Filed: March 14, 2013
    Publication date: May 28, 2015
    Applicant: RHEINISCH-WESTFÄLISCH-TECHNISCHE-HOCHSCHULE AACHAN
    Inventors: Stefan Engel, Ir Rik W.A.A. De Doncker
  • Publication number: 20150059311
    Abstract: A metal connection plate of a chain link of an energy chain, which metal connecting plate has two ends, wherein one end has first elements and the other end has second elements, wherein the first elements can be inserted into the second elements of a further connecting plate in such a way that the connecting plates are rotatably connected to each other. The first and second elements are each formed by a hole having a border. The borders form stop surfaces corresponding to each other, which stop surfaces protrude substantially perpendicularly to an extent to the connecting plate.
    Type: Application
    Filed: March 25, 2013
    Publication date: March 5, 2015
    Applicant: Tsubaki Kabelschlepp GmbH
    Inventors: Thomas Ameis, Stefan Engel, Mark Daub, Sven Kratzke, Ulrich Wagener
  • Publication number: 20140354390
    Abstract: The invention relates to a tap changer for voltage regulation, comprising semiconductor switch units (S1.1, . . . , S1.6; S2.1, . . . , S2.6) on a variable transformer having a regulating winding, wherein two parallel load branches (1, 2) are provided, in each of which several series-connected semiconductor switch units are arranged. Parts of the regulating winding (W1, W2, W3) and bridges (B1, B2) are provided alternately and run parallel between the two load branches, alternating such that by corresponding connection of the semiconductor switch units in both load branches, the parts of the regulating wiring can be operated arbitrarily in a subtractive and/or additive manner.
    Type: Application
    Filed: February 6, 2012
    Publication date: December 4, 2014
    Inventors: Stefan Engel, Jochen Von Bloh, Dieter Dohnal, Karsten Viereck, Rik W. De Doncker
  • Patent number: 8851649
    Abstract: A 1K UV-ink jet printing ink composition comprising effect pigments, wherein the composition comprises: a) at least one difunctional (meth)acrylate monomer, b) at least one photoinitiator, c) effect pigments having a volume averaged particle size distribution with a D98<10 ?m, d) optionally trifunctional and/or polyfunctional (meth)acrylate monomers, and wherein the viscosity of the ink jet printing ink composition is at maximum 30 mPas, measured at 25° C. for 10 minutes with a Brookfield R/S rheometer using a double gap cylinder according to DIN 53453 (German Industrial Standards) at 150 rpm and wherein the total concentration of the at least one difunctional (meth)acrylate monomer of a) and the trifunctional and/or polyfunctional (meth)acrylate monomers of d) is in a range of 75 to 100 wt.-%, based on the total amount of (meth)acrylate monomers.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: October 7, 2014
    Assignee: Eckart GmbH
    Inventors: Stefan Engel, Dieter Prölβ, Jörg Männig
  • Patent number: 8735461
    Abstract: A printing ink, preferably ink-jet ink, containing pearlescent pigments and at least one of at least one solvent, at least one radiation-curable component and at least one binder, wherein the pearlescent pigments comprise a substantially transparent platelet-shaped substrate having a density ?S and at least one optically active coating having a density ?M, and the pearlescent pigments have a d90 value for a cumulative frequency distribution of a volume-averaged size distribution function with a range from 3.5 to 15 ?m. The invention further relates to a process for producing the printing ink.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: May 27, 2014
    Assignee: Eckart GmbH
    Inventors: Michael Grüner, Günter Kaupp, Stefan Engel, Barbara Mendler, Ulrich Schmidt
  • Patent number: 8608843
    Abstract: The present disclosure is directed to a pigment preparation comprising aluminum effect pigments, a solvent and at least one additive, wherein the aluminium effect pigments have a d98 value of the volume averaged particle size distribution curve of less than 15 ?m, the at least one additive is a phosphorous containing additive, and the solvent has a viscosity equal to or more than 1.8 mPa's at 25° C. The disclosure is further directed to an ink jet printing ink as well the use thereof.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: December 17, 2013
    Assignee: Eckart GmbH
    Inventors: Joerg Maennig, Stefan Trummer, Andreas Kroell, Dieter Proelss, Stefan Engel, Werner Pieper
  • Patent number: 8333832
    Abstract: The present disclosure is directed to a pigment preparation comprising aluminum effect pigments, a solvent and at least one additive, wherein the aluminum effect pigments have a d98 value of the volume averaged particle size distribution curve of less than 15 ?m, the at least one additive is a phosphorous containing additive, and the solvent has a viscosity equal to or more than 1.8 mPa's at 25° C. The disclosure is further directed to an ink jet printing ink as well the use thereof.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: December 18, 2012
    Assignee: Eckart GmbH
    Inventors: Joerg Maennig, Stefan Trummer, Andreas Kroell, Dieter Proelss, Stefan Engel, Werner Pieper
  • Publication number: 20120287213
    Abstract: A 1K UV-ink jet printing ink composition comprising effect pigments, wherein the composition comprises: a) at least one difunctional (meth)acrylate monomer, b) at least one photoinitiator, c) effect pigments having a volume averaged particle size distribution with a D98<10 ?m, d) optionally trifunctional and/or polyfunctional (meth)acrylate monomers, and wherein the viscosity of the ink jet printing ink composition is at maximum 30 mPas, measured at 25° C. for 10 minutes with a Brookfield R/S rheometer using a double gap cylinder according to DIN 53453 (German Industrial Standards) at 150 rpm and wherein the total concentration of the at least one difunctional (meth)acrylate monomer of a) and the trifunctional and/or polyfunctional (meth)acrylate monomers of d) is in a range of 75 to 100 wt.-%, based on the total amount of (meth)acrylate monomers.
    Type: Application
    Filed: May 13, 2011
    Publication date: November 15, 2012
    Inventors: Stefan ENGEL, Dieter PRÖLSS, Jörg MÄNNIG
  • Publication number: 20120135209
    Abstract: An ink jet printer ink comprising effect pigments and organic solvents or solvent mixtures, wherein the effect pigments comprise a) aluminum effect pigments having a mean thickness in a range of 10 to 100 ?m and a d98 value of the cumulative frequency distribution of the volume-averaged size distribution function of less than 15 ?m and/or b) pearlescent pigments having a d90 value of the cumulative frequency distribution of the volume-averaged size distribution in a range of 3.5 to 15 ?m. The viscosity of the ink jet printer ink is 1 to 50 mPa*s and the weight ratio of effect pigment to binder is 2 to 15. The invention further relates to the use of the ink jet printer ink.
    Type: Application
    Filed: August 13, 2010
    Publication date: May 31, 2012
    Inventors: Michael Becker, Stefan Engel