Patents by Inventor Andreas Stein

Andreas Stein 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: 20240352441
    Abstract: The present invention relates to a method for reducing endotoxin levels or removing endotoxins from nucleic acids. For this a non-ionic detergent selected from the group of alkylglycosides and secondary alcohol alkoxylates or mixtures thereof is added prior or during anion exchange chromatographic purification of the nucleic acids using a membrane or monolith-based sorbent.
    Type: Application
    Filed: August 3, 2022
    Publication date: October 24, 2024
    Applicant: MERCK PATENT GMBH
    Inventors: Anja HEINEN-KREUZIG, Andre KIESEWETTER, Andreas STEIN, Akshat GUPTA
  • Patent number: 11573194
    Abstract: Reference electrodes that include a solid electron conductor; an interlayer; and a polymeric membrane layer comprising a polymer composition, the polymer composition comprising at least one silicone-containing polymer and at least one ionic liquid, wherein the polymeric membrane layer and the polymer composition are essentially plasticizer free and the silicone-containing polymer and the ionic liquid are miscible as determined using a thermodynamic method that shows a single glass transition temperature (Tg) of a composition including the at least one silicone-containing polymer and the at least one ionic liquid, wherein the interlayer is disposed between the solid electron conductor and the polymeric membrane layer. Also disclosed are electrochemical measurement systems including such reference electrodes.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: February 7, 2023
    Assignee: REGENTS OF THE UNIVERSITY OF MINNESOTA
    Inventors: Xin Chen, Andreas Stein, Philippe Buhlmann
  • Patent number: 11307165
    Abstract: Solid-contact electrodes include a molecular redox buffer that is covalently attached to one of the components of the electrodes. These electrodes can be incorporated into electrochemical sensor systems. The electrode components are an electron conductor, a membrane and optionally, an interlayer. The electrode includes covalent attachment of the molecular redox buffer to the interlayer, to the electron conductor or the membrane. The interlayer includes nanoporous carbon such as CIM-carbon. The molecular redox buffer includes a well-defined redox pair, e.g., a complex of Co(II)/Co(III). The electrodes are ion-selective electrodes (ISEs) or reference electrodes. Methods include constructing solid contact electrodes and using the electrodes in electrochemical sensor systems to determine the quantity of an analyte in a sample. The electrochemical sensor systems include disposable paper-based devices and/or wearable devices for measuring analytes in a sample.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: April 19, 2022
    Assignee: REGENTS OF THE UNIVERSITY OF MINNESOTA
    Inventors: Jinbo Hu, Philippe Buhlmann, Andreas Stein, Xue Zhen
  • Publication number: 20210140910
    Abstract: Reference electrodes that include a solid electron conductor; an interlayer; and a polymeric membrane layer comprising a polymer composition, the polymer composition comprising at least one silicone-containing polymer and at least one ionic liquid, wherein the polymeric membrane layer and the polymer composition are essentially plasticizer free and the silicone-containing polymer and the ionic liquid are miscible as determined using a thermodynamic method that shows a single glass transition temperature (Tg) of a composition including the at least one silicone-containing polymer and the at least one ionic liquid, wherein the interlayer is disposed between the solid electron conductor and the polymeric membrane layer. Also disclosed are electrochemical measurement systems including such reference electrodes.
    Type: Application
    Filed: November 11, 2020
    Publication date: May 13, 2021
    Inventors: Xin Chen, Andreas Stein, Philippe Buhlmann
  • Patent number: 10729641
    Abstract: The present invention relates to an inorganic material comprising particles of three-dimensional ordered macroporous structure comprising spherical pores, said pores having an average pore diameter ranging from 50 nm to 10 ?m, the pore diameter varying by no greater than 20%, the surface of said pores being coated by an absorber agent of the visible wavelength spectrum, said particles having an average largest dimension ranging from 1 to 50 ?m, and wherein said particles are coated with at least a hydrophobic component. The invention further relates to a process for preparing said inorganic material.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: August 4, 2020
    Assignees: REGENTS OF THE UNIVERSITY OF MINNESOTA, L'OREAL
    Inventors: Laurent Vidal, Andreas Stein, David Josephson
  • Patent number: 9899552
    Abstract: A self-adhesive edge-protection tape is intended to improve the protective effect for glass edges. This is achieved by providing an adhesive tape which comprises, in sequence directed towards the substrate to be covered, a backing layer (hard phase) and a soft phase comprising a polymer foam, a viscoelastic composition and/or an elastomeric composition, where the thickness of the hard phase is ?150 ?m, the thickness of the soft phase is ?200 ?m and the ratio of the thickness of the soft phase to the thickness of the hard phase is ?4. The invention also relates to a solar module which comprises an adhesive tape according to the invention adhesive-bonded around at least one portion of the edges thereof, and the use of the claimed adhesive tape for the protection of edges of a solar module.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: February 20, 2018
    Assignee: TESA SE
    Inventors: Wilhelm Watzke, Werner Kluge-Paletta, Andreas Stein
  • Publication number: 20180024087
    Abstract: Solid-contact electrodes include a molecular redox buffer that is covalently attached to one of the components of the electrodes. These electrodes can be incorporated into electrochemical sensor systems. The electrode components are an electron conductor, a membrane and optionally, an interlayer. The electrode includes covalent attachment of the molecular redox buffer to the interlayer, to the electron conductor or the membrane. The interlayer includes nanoporous carbon such as CIM-carbon. The molecular redox buffer includes a well-defined redox pair, e.g., a complex of Co(II)/Co(III). The electrodes are ion-selective electrodes (ISEs) or reference electrodes. Methods include constructing solid contact electrodes and using the electrodes in electrochemical sensor systems to determine the quantity of an analyte in a sample. The electrochemical sensor systems include disposable paper-based devices and/or wearable devices for measuring analytes in a sample.
    Type: Application
    Filed: July 20, 2017
    Publication date: January 25, 2018
    Inventors: Jinbo Hu, Philippe Buhlmann, Andreas Stein, Xue Zhen
  • Patent number: 9874539
    Abstract: The present description discloses solid-contact (SC) electrodes that use mesoporous carbon such as colloid-imprinted mesoporous (CIM) carbon as the interlayer. The electrodes can be ion-selective electrodes (ISEs) or reference electrodes. The CIM carbon with the interconnected mesopores is used as the intermediate layer between the solid electron conductor, such as gold, and a membrane such as an ionophore-doped ion-selective membrane or a reference membrane. The disclosure includes methods of constructing solid contact electrodes such as SC-ISE or reference electrodes with a CIM carbon interlayer, and methods of using the electrodes to determine the quantity of an analyte in a sample. The description also includes disposable paper-based devices for measuring analytes in a sample.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: January 23, 2018
    Assignee: REGENTS OF THE UNIVERSITY OF MINNESOTA
    Inventors: Jinbo Hu, Philippe Buhlmann, Andreas Stein
  • Publication number: 20170345959
    Abstract: A self-adhesive edge-protection tape is intended to improve the protective effect for glass edges. This is achieved by providing an adhesive tape which comprises, in sequence directed towards the substrate to be covered, a backing layer (hard phase) and a soft phase comprising a polymer foam, a viscoelastic composition and/or an elastomeric composition, where the thickness of the hard phase is ?150 ?m, the thickness of the soft phase is ?200 ?m and the ratio of the thickness of the soft phase to the thickness of the hard phase is ?4. The invention also relates to a solar module which comprises an adhesive tape according to the invention adhesive-bonded around at least one portion of the edges thereof, and the use of the claimed adhesive tape for the protection of edges of a solar module.
    Type: Application
    Filed: August 11, 2017
    Publication date: November 30, 2017
    Inventors: Wilhelm WATZKE, Werner KLUGE-PALETTA, Andreas STEIN
  • Publication number: 20170244094
    Abstract: Composite materials having domains of lithium oxometallates in an electronically conductive matrix, and methods of making such composite materials are provided. Exemplary lithiated metals oxides include, for example, doped or undoped lithium oxometallates of the formula Li8MaO6 and/or Li7MbO6, wherein Ma represents Zr and/or Sn, and Mb represents Nb and/or Ta. Such composite materials can be used in lithium ion batteries, for example, as an active material such as an electrode that can store charge in the form of lithium ions.
    Type: Application
    Filed: February 27, 2015
    Publication date: August 24, 2017
    Inventors: Andreas Stein, Anh Dinh VU, Yuan Fang, Benjamin Edwin Wilson
  • Publication number: 20170080124
    Abstract: This disclosure describes biocompatible composites and method for making the biocompatible composites. Generally, the biocompatible composite includes a fibril prepared from a biocompatible polymer and cationic component, and a uniform coating of silica-containing material.
    Type: Application
    Filed: September 16, 2016
    Publication date: March 23, 2017
    Inventors: Allison Hubel, Michael Dominick DiVito, Andreas Stein
  • Patent number: 9537034
    Abstract: The invention is to facilitate the attachment of an installation system in the production of a solar module. This is achieved via a process which comprises the following steps: a) mutual superposition of the layers that the structure of the solar module requires, where at least one heat-activatable double-sided adhesive tape is placed on the external side of the reverse-side layer and at least one retention plate is placed on said adhesive tape; b) mutual lamination of the layers mutually superposed in step a), at least with exposure to heat.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: January 3, 2017
    Assignee: TESA SE
    Inventors: Michael Schwertfeger, Andreas Stein
  • Publication number: 20160380256
    Abstract: Composite materials having domains of lithium oxometallates in an electronically conductive matrix, and methods of making such composite materials are provided. Exemplary lithiated metals oxides include, for example, doped or undoped lithium oxometallates of the formula Li8MaO6 and/or Li7MbO6, wherein Ma represents Zr and/or Sn, and Mb represents Nb and/or Ta. Such composite materials can be used in lithium ion batteries, for example, as an active material such as an electrode that can store charge in the form of lithium ions.
    Type: Application
    Filed: February 27, 2015
    Publication date: December 29, 2016
    Inventors: Andreas Stein, Anh Dinh VU, Yuan Fang, Benjamin Edwin Wilson
  • Publication number: 20160361248
    Abstract: The present invention relates to an inorganic material comprising particles of three-dimensional ordered macroporous structure comprising spherical pores, said pores having an average pore diameter ranging from 50 nm to 10 ?m, the pore diameter varying by no greater than 20%, the surface of said pores being coated by an absorber agent of the visible wavelength spectrum, said particles having an average largest dimension ranging from 1 to 50 ?m, and wherein said particles are coated with at least a hydrophobic component. The invention further relates to a process for preparing said inorganic material.
    Type: Application
    Filed: June 12, 2015
    Publication date: December 15, 2016
    Inventors: Laurent VIDAL, Andreas STEIN, David JOSEPHSON
  • Publication number: 20160046771
    Abstract: Oligomer-grafted nanofiller compositions and composites including oligomer-grafted nanofillers are disclosed. An oligomer-grafted nanofiller composition for disposition in a polymer matrix, the polymeric matrix comprising polymers derived from a plurality of polymerizable units, can include a nanoparticle, one or more coupling groups bonded to the nanoparticle; and one or more oligomers bonded to the one or more coupling groups. In an embodiment the oligomer is derived from two or more polymerizable units, at least one polymerizable unit being at least substantially similar to at least one of the polymerizable units of the polymer matrix. In another embodiment the oligomer comprises two or more polymerizable units and improves dispersion, interfacial strength, or both dispersion and interfacial strength between the nano-particle and the polymer matrix. Composites and methods are also disclosed.
    Type: Application
    Filed: March 14, 2014
    Publication date: February 18, 2016
    Inventors: Francis R. THIBODEAU, Yuqiang QIAN, Andreas STEIN, Christopher W. MACOSKO, Nicholas D. PETKOVICH
  • Publication number: 20150344666
    Abstract: The invention concerns nanofiller composition comprising (i) a nanoparticle; (ii) a plurality of coupling groups bonded to the nanoparticle; (iii) one or more (a) oligomers or (b) organic isocyanate residues bonded to the one or more coupling groups; and, optionally, (iv) one or more dispersing moieties that facilitate dispersion of the nanoparticle bonded to one or more of the coupling groups or organic isocyanate residues; as well as laminates comprising such nanoparticles in at least one layer.
    Type: Application
    Filed: May 28, 2015
    Publication date: December 3, 2015
    Inventors: Christopher W. Macosko, Andreas Stein, Yuqiang Qian, Gregory Moriarty, Siyao He, Francis R. Thibodeau
  • Publication number: 20150338367
    Abstract: The present description discloses solid-contact (SC) electrodes that use mesoporous carbon such as colloid-imprinted mesoporous (CIM) carbon as the interlayer. The electrodes can be ion-selective electrodes (ISEs) or reference electrodes. The CIM carbon with the interconnected mesopores is used as the intermediate layer between the solid electron conductor, such as gold, and a membrane such as an ionophore-doped ion-selective membrane or a reference membrane. The disclosure includes methods of constructing solid contact electrodes such as SC-ISE or reference electrodes with a CIM carbon interlayer, and methods of using the electrodes to determine the quantity of an analyte in a sample. The description also includes disposable paper-based devices for measuring analytes in a sample.
    Type: Application
    Filed: May 19, 2015
    Publication date: November 26, 2015
    Inventors: Jinbo Hu, Phillippe Buhlmann, Andreas Stein
  • Publication number: 20150047695
    Abstract: The invention is to facilitate the attachment of an installation system in the production of a solar module. This is achieved via a process which comprises the following steps: a) mutual superposition of the layers that the structure of the solar module requires, where at least one heat-activatable double-sided adhesive tape is placed on the external side of the reverse-side layer and at least one retention plate is placed on said adhesive tape; b) mutual lamination of the layers mutually superposed in step a), at least with exposure to heat.
    Type: Application
    Filed: August 13, 2013
    Publication date: February 19, 2015
    Inventors: Michael SCHWERTFEGER, Andreas STEIN
  • Publication number: 20140275323
    Abstract: Oligomer-grafted nanofiller compositions and composites including oligomer-grafted nanofillers are disclosed. An oligomer-grafted nanofiller composition for disposition in a polymer matrix, the polymeric matrix comprising polymers derived from a plurality of polymerizable units, can include a nanoparticle, one or more coupling groups bonded to the nanoparticle; and one or more oligomers bonded to the one or more coupling groups. In an embodiment the oligomer is derived from two or more polymerizable units, at least one polymerizable unit being at least substantially similar to at least one of the polymerizable units of the polymer matrix. In another embodiment the oligomer comprises two or more polymerizable units and improves dispersion, interfacial strength, or both dispersion and interfacial strength between the nanoparticle and the polymer matrix. Composites and methods are also disclosed.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Inventors: Francis R. Thibodeau, Yuqiang Qian, Andreas Stein, Christopher W. Macosko
  • Publication number: 20130340827
    Abstract: A self-adhesive edge-protection tape is intended to improve the protective effect for glass edges. This is achieved by providing an adhesive tape which comprises, in sequence directed towards the substrate to be covered, a backing layer (hard phase) and a soft phase comprising a polymer foam, a viscoelastic composition and/or an elastomeric composition, where the thickness of the hard phase is ?150 ?m, the thickness of the soft phase is ?200 ?m and the ratio of the thickness of the soft phase to the thickness of the hard phase is ?4. The invention also relates to a solar module which comprises an adhesive tape according to the invention adhesive-bonded around at least one portion of the edges thereof, and the use of the claimed adhesive tape for the protection of edges of a solar module.
    Type: Application
    Filed: June 19, 2013
    Publication date: December 26, 2013
    Inventors: Wilhelm Watzke, Werner Kluge-Paletta, Andreas Stein