Patents by Inventor Stephan Kaiser

Stephan Kaiser 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: 20230407226
    Abstract: The present set of embodiments relate to a system, method, and apparatus for culturing cells within a cell culture vessel having a mixing element. The cell culture system includes a flexible portion and a mixing element disposed therein. The mixing element includes a suspended foldable portion. The system is configured to reduce shear stress on cells without compromising mixing efficiency. This reduction is accomplished by using a mixing element having a large surface area allowing for reduced rotational speeds. The system is collapsible for ease of transport and disposal. The flexible portion collapses and the foldable portion folds to minimize the volume of the system while not in operation.
    Type: Application
    Filed: August 30, 2023
    Publication date: December 21, 2023
    Inventor: Stephan Kaiser
  • Patent number: 11788048
    Abstract: The present set of embodiments relate to a system, method, and apparatus for culturing cells within a cell culture vessel having a mixing element. The cell culture system includes a flexible portion and a mixing element disposed therein. The mixing element includes a suspended foldable portion. The system is configured to reduce shear stress on cells without compromising mixing efficiency. This reduction is accomplished by using a mixing element having a large surface area allowing for reduced rotational speeds. The system is collapsible for ease of transport and disposal. The flexible portion collapses and the foldable portion folds to minimize the volume of the system while not in operation.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: October 17, 2023
    Assignee: Life Technologies Corporation
    Inventor: Stephan Kaiser
  • Publication number: 20220145230
    Abstract: The present set of embodiments relate to a system, method, and apparatus for separating cells from a suspension using a gravity driven cell separation device. The apparatus may include a chamber that is separated into a gas compartment and a liquid compartment allowing for transfer of gas through a membrane into the liquid compartment where the cell suspension flows during operation. The embodiments are designed to maximize the gravitational separation effect on the suspension while mitigating the loss of surface area through which gas transfer can occur through a membrane to provide nutrients to cells in the suspension by tilting the cell separation device on two or more axes.
    Type: Application
    Filed: May 13, 2020
    Publication date: May 12, 2022
    Inventor: Stephan KAISER
  • Patent number: 11222992
    Abstract: An optoelectronic component, comprising: a structured semiconductor layer, a metallic mirror layer arranged on the semiconductor layer, a diffusion barrier layer arranged on the metallic mirror layer, a passivation layer arranged on the diffusion barrier layer, wherein the semiconductor layer comprises a mesa structure with mesa trenches. The mesa trenches taper from the surface of the semiconductor layer towards the mirror layer.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: January 11, 2022
    Assignee: OSRAM OLED GmbH
    Inventors: Stephan Kaiser, Andreas Ploessl
  • Publication number: 20200255784
    Abstract: The present set of embodiments relate to a system, method, and apparatus for culturing cells within a cell culture vessel having a mixing element. The cell culture system includes a flexible portion and a mixing element disposed therein. The mixing element includes a suspended foldable portion. The system is configured to reduce shear stress on cells without compromising mixing efficiency. This reduction is accomplished by using a mixing element having a large surface area allowing for reduced rotational speeds. The system is collapsible for ease of transport and disposal. The flexible portion collapses and the foldable portion folds to minimize the volume of the system while not in operation.
    Type: Application
    Filed: September 14, 2018
    Publication date: August 13, 2020
    Inventor: Stephan Kaiser
  • Patent number: 10267341
    Abstract: The invention relates to a method and a device for determining of at least one end position of a displacement element of an adjustable hydraulic machine, in particular of the axial piston type, shiftable or displaceable between two ends position a by means of a displacement unit between a first end position and a second end position. According to the invention the determination of having reached an end position of displacement takes place by means of a measurement circuit, whose electrical characteristics are changed jumpily when an end position is reached. This is done by connecting a partial branch of the measuring circuit with earth, when a moveable element comes into electric contact with a limit stop assigned to the corresponding end position.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: April 23, 2019
    Assignee: Danfoss Power Solutions GmbH & Co. OHG
    Inventors: Suenje Marsch, Rolf Rathke, Stephan Kaiser, Edat Kaya
  • Publication number: 20180331254
    Abstract: An optoelectronic component, comprising: a structured semiconductor layer, a metallic mirror layer arranged on the semiconductor layer, a diffusion barrier layer arranged on the metallic mirror layer, a passivation layer arranged on the diffusion barrier layer, wherein the semiconductor layer comprises a mesa structure with mesa trenches.
    Type: Application
    Filed: July 20, 2018
    Publication date: November 15, 2018
    Inventors: Stephan Kaiser, Andreas Ploessl
  • Patent number: 10128405
    Abstract: A method of producing an optoelectronic component, comprising the method steps: A) providing a growth substrate (1); B) growing at least one semiconductor layer (2) epitaxially, to produce an operationally active zone; C) applying a metallic mirror layer (3) to the semiconductor layer (2); D) applying at least one contact layer (8) for electronic contacting of the component; E) detaching the growth substrate (1) from the semiconductor layer (2), so exposing a surface of the semiconductor layer (2); and F) structuring the semiconductor layer (2) by means of an etching method from the side of the surface which was exposed in method step E).
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: November 13, 2018
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Stephan Kaiser, Andreas Ploessl
  • Patent number: 9919506
    Abstract: The invention relates to a floor covering adhesive composition, based on an aqueous, emulsifier-stabilized polymer dispersion of vinyl acetate-ethylene copolymer, containing A) tackifying resin, B) one or more fillers, and C) a vinyl acetate-ethylene copolymer in the form of an emulsifier-stabilized aqueous dispersion, characterized in that the vinyl acetate-ethylene copolymer is obtained by radical-initiated emulsion polymerization in an aqueous medium, of a) 60 to 89.9% by weight of vinyl acetate, b) 10 to 36% by weight of ethylene, c) 0 to 2% by weight of one or more monomers selected from the group of vinyl esters of carboxylic acids having 8 to 12 C atoms and acrylic acid alkyl esters having a C1 to C8 alkyl radical, d) 0.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: March 20, 2018
    Assignee: Wacker Chemie AG
    Inventors: Florian Bauers, Stephan Kaiser
  • Patent number: 9664342
    Abstract: An optoelectronic component device includes a plurality of optoelectronic components that provide and/or absorb electromagnetic radiation; a reflector arranged in a beam path of the electromagnetic radiation of the plurality of optoelectronic components and which has a surface that is at least partly reflective with respect to the provided electromagnetic radiation; wherein the plurality of optoelectronic components at least partly surround the reflector or are at least partly surrounded by the reflector; and the reflector reflects a provided electromagnetic radiation such that a predefined field distribution of the reflected electromagnetic radiation is formed in the image plane of the optoelectronic component device.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: May 30, 2017
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Stephan Kaiser, Tony Albrecht, Michael Bestele, Jan Marfeld, Albert Schneider, Markus Kirsch
  • Patent number: 9488769
    Abstract: A surface light guide includes a radiation exit area running along a main extension plane of the surface light guide and includes a light guiding region, which has scattering locations and a coating arranged on a first main area of the light guiding region, wherein radiation coupled in along the main extension plane impinging on the first main area after scattering at the scattering locations has an excessively increased radiation component and the coating reduces in a targeted manner an exit of the excessively increased radiation component from the radiation exit area.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: November 8, 2016
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Peter Brick, Joachim Frank, Stephan Kaiser, Gerhard Kuhn, Ales Markytan, Julius Muschaweck, Christian Neugirg
  • Publication number: 20160289512
    Abstract: The invention relates to a floor covering adhesive composition, based on an aqueous, emulsifier-stabilized polymer dispersion of vinyl acetate-ethylene copolymer, containing A) tackifying resin, B) one or more fillers, and C) a vinyl acetate-ethylene copolymer in the form of an emulsifier-stabilized aqueous dispersion, characterized in that the vinyl acetate-ethylene copolymer is obtained by radical-initiated emulsion polymerization in an aqueous medium, of a) 60 to 89.9% by weight of vinyl acetate, b) 10 to 36% by weight of ethylene, c) 0 to 2% by weight of one or more monomers selected from the group of vinyl esters of carboxylic acids having 8 to 12 C atoms and acrylic acid alkyl esters having a C to C8 alkyl radical, d) 0.
    Type: Application
    Filed: October 28, 2014
    Publication date: October 6, 2016
    Applicant: WACKER CHEMIE AG
    Inventors: FLORIAN BAUERS, STEPHAN KAISER
  • Publication number: 20160282143
    Abstract: The invention relates to a method and a device for determining of at least one end position of a displacement element of an adjustable hydraulic machine, in particular of the axial piston type, shiftable or displaceable between two ends position a by means of a displacement unit between a first end position and a second end position. According to the invention the determination of having reached an end position of displacement takes place by means of a measurement circuit, whose electrical characteristics are changed jumpily when an end position is reached. This is done by connecting a partial branch of the measuring circuit with earth, when a moveable element comes into electric contact with a limit stop assigned to the corresponding end position.
    Type: Application
    Filed: March 22, 2016
    Publication date: September 29, 2016
    Inventors: Suenje Marsch, Rolf Rathke, Stephan Kaiser, Edat Kaya
  • Patent number: 9385258
    Abstract: An optoelectronic semiconductor device includes at least one radiation-emitting and/or radiation-receiving semiconductor chip including a radiation passage surface and a mounting surface opposite the radiation passage surface, wherein the mounting surface includes a first electrical contact structure and a second electrical contact structure electrically insulated from the first electrical contact structure, and wherein the radiation passage surface is free of contact structures, a reflective sheath surrounding the at least one semiconductor chip at least in sections, and a protective sheath surrounding the at least one semiconductor chip and/or the reflective sheath at least in sections.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: July 5, 2016
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Thomas Schlereth, Stephan Kaiser, Alexander Linkov
  • Patent number: 9379286
    Abstract: An optoelectronic semiconductor chip (10) is specified, comprising a semiconductor layer sequence (20) having at least two active regions (21, 22) arranged one above another, wherein the active regions (21, 22) each have a first semiconductor region (3) of a first conduction type, a second semiconductor region (5) of a second conduction type and a radiation-emitting active layer (4) arranged between the first semiconductor region (3) and the second semiconductor region (5). The optoelectronic semiconductor chip (10) comprises a mirror layer (6), which is arranged at a side of the semiconductor layer sequence (20) facing away from a radiation exit surface (13), and at least two electrical contacts (11, 12) which are arranged at a side of the mirror layer (6) facing away from the radiation exit surface (13). Furthermore, a light source (30) comprising the optoelectronic semiconductor chip (10) is specified.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: June 28, 2016
    Assignee: OSRAM OPTO SEMICONDUCTORS GMBH
    Inventors: Christian Gaertner, Thomas Schlereth, Stephan Kaiser
  • Patent number: 9312435
    Abstract: An optoelectronic semiconductor device includes a first light source that emits green, white or white-green light and includes a semiconductor chip that emits in the blue spectral range, and a first conversion element attached directly to the semiconductor chip, a second light source that emits red light, having a semiconductor chip, that emits in a blue spectral range, and having a second conversion element attached directly to the semiconductor chip, and/or having a semiconductor chip that emits in a red spectral range, a third light source that emits blue light and has a semiconductor chip emitting in the blue spectral range, and a filler body having a matrix material into which a conversion agent is embedded, wherein the filler body is disposed downstream of the light sources collectively.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: April 12, 2016
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Christian Gärtner, Ales Markytan, Albert Schneider, Stephan Kaiser
  • Patent number: 9214608
    Abstract: A luminescence diode arrangement includes a first luminescence diode chip, a second luminescence diode chip and a luminescence conversion element, wherein the first luminescence diode chip emits blue light, the second luminescence diode chip contains a semiconductor layer sequence that emits greens light, the luminescence conversion element converts part of the blue light emitted by the first luminescence diode chip into red light, and the luminescence diode arrangement emits mixed light containing blue light of the first luminescence diode chip, green light of the second luminescence diode chip and red light of the luminescence conversion element.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: December 15, 2015
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Thorsten Kunz, Stephan Kaiser
  • Patent number: 9176268
    Abstract: The invention relates to a surface light source with a lighting surface that includes at least one semiconductor body that emits electromagnetic radiation from its front side during operation. Decoupling structures are suitable for producing a local variation of the light density on the lighting surface, so that the light density is increased in at least one illumination area with respect to a background area.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: November 3, 2015
    Assignee: OSRAM OPTO SEMICONDUCTORS GMBH
    Inventors: Peter Brick, Joachim Frank, Uli Hiller, Stephan Kaiser, Gerhard Kuhn, Ales Markytan, Julius Muschaweck, Christian Neugirg
  • Publication number: 20150233534
    Abstract: An optoelectronic component device includes a plurality of optoelectronic components that provide and/or absorb electromagnetic radiation; a reflector arranged in a beam path of the electromagnetic radiation of the plurality of optoelectronic components and which has a surface that is at least partly reflective with respect to the provided electromagnetic radiation; wherein the plurality of optoelectronic components at least partly surround the reflector or are at least partly surrounded by the reflector; and the reflector reflects a provided electromagnetic radiation such that a predefined field distribution of the reflected electromagnetic radiation is formed in the image plane of the optoelectronic component device.
    Type: Application
    Filed: September 24, 2013
    Publication date: August 20, 2015
    Inventors: Stephan Kaiser, Tony Albrecht, Michael Bestele, Jan Marfeld, Albert Schneider, Markus Kirsch
  • Publication number: 20150236206
    Abstract: An optoelectronic semiconductor chip (10) is specified, comprising a semiconductor layer sequence (20) having at least two active regions (21, 22) arranged one above another, wherein the active regions (21, 22) each have a first semiconductor region (3) of a first conduction type, a second semiconductor region (5) of a second conduction type and a radiation-emitting active layer (4) arranged between the first semiconductor region (3) and the second semiconductor region (5). The optoelectronic semiconductor chip (10) comprises a mirror layer (6), which is arranged at a side of the semiconductor layer sequence (20) facing away from a radiation exit surface (13), and at least two electrical contacts (11, 12) which are arranged at a side of the mirror layer (6) facing away from the radiation exit surface (13). Furthermore, a light source (30) comprising the optoelectronic semiconductor chip (10) is specified.
    Type: Application
    Filed: September 6, 2013
    Publication date: August 20, 2015
    Inventors: Christian Gaertner, Thomas Schlereth, Stephan Kaiser