Patents by Inventor Andreas Greiner

Andreas Greiner 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: 20220025137
    Abstract: Elastic Parylene films produced via chemical vapor deposition polymerization (CVDP) on a substrate are disclosed.
    Type: Application
    Filed: October 4, 2021
    Publication date: January 27, 2022
    Inventors: Andreas Greiner, Tobias Moss, Rakesh Kumar
  • Patent number: 10869750
    Abstract: AN endovascular stent graft including a hydrogel capable of retarded swelling when coming into contact with blood upon implantation in a patient is provided. Methods for the treatment of aneurysms and the prevention of ischemic neurological damage, in particular spinal cord damage, in patients receiving aneurysm repair procedures, using said endovascular stent grafts is also provided.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: December 22, 2020
    Assignee: Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen
    Inventors: Andreas Greiner, Stefan Jockenhövel, Andrij Pich, Larissa Hussmann, Valentine Gesché
  • Publication number: 20200325288
    Abstract: Elastic Parylene films produced via chemical vapor deposition polymerization (CVDP) on a substrate are disclosed.
    Type: Application
    Filed: April 10, 2019
    Publication date: October 15, 2020
    Inventors: Andreas Greiner, Tobias Moss, Rakesh Kumar
  • Publication number: 20200270388
    Abstract: The invention relates to medical aids, in particular compression products, such as compression stockings or bandages. More specifically, the invention relates to compression products comprising fibre forming polyurethane polymers showing a delayed continuous relaxation behaviour. The invention furthermore relates to polyurethane polymers containing N-diol and corresponding quaternised polyurethane polymers, to a process of producing the polyurethane polymers, to blends with elastane, as well as to uses.
    Type: Application
    Filed: August 8, 2018
    Publication date: August 27, 2020
    Inventors: CHRISTA HUGER, ANGELIKA SCHERM, SEEMA AGARWAL, ANDREAS GREINER, PIN HU
  • Publication number: 20200078161
    Abstract: AN endovascular stent graft including a hydrogel capable of retarded swelling when coming into contact with blood upon implantation in a patient is provided. Methods for the treatment of aneurysms and the prevention of ischemic neurological damage, in particular spinal cord damage, in patients receiving aneurysm repair procedures, using said endovascular stent grafts is also provided.
    Type: Application
    Filed: September 10, 2018
    Publication date: March 12, 2020
    Inventors: Andreas GREINER, Stefan JOCKENHÖVEL, Andrij PICH
  • Patent number: 10468248
    Abstract: In various embodiments, a method is provided. The method may include forming a buried electrically charged region at a predefined position in a first layer in such a way that the buried electrically charged region generates an electric field having a lateral inhomogeneous field distribution above the first layer, and forming a second layer above the first layer using the field distribution in such a way that a structure of the second layer correlates with the position of the buried electrically charged region.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: November 5, 2019
    Assignee: Infineon Technologies AG
    Inventors: Heiko Aßmann, Felix Braun, Marcus Dankelmann, Stefan Doering, Karsten Friedrich, Udo Goetschkes, Andreas Greiner, Ralf Rudolf, Jens Schneider
  • Patent number: 10428184
    Abstract: The invention concerns a method for producing a superhydrophobic membrane or surface coating of a substrate from an aqueous phase comprising the following steps: a) Preparing an aqueous dispersion by dispersing particles of hydrophobic polymer(s) in an aqueous solution of protic polymer(s), wherein the protic polymer(s) and the hydrophobic polymer(s) are present in a weight ratio of protic polymer(s):hydrophobic polymer(s) in a range of 5:95 to 22:78, b) electrospinning the dispersion of step a) onto a carrier for producing the membrane or onto the surface for producing the surface coating thereby producing at least one fiber and a nonwoven fabric from the fiber, c) subjecting the nonwoven fabric to a sol-gel process, wherein a precursor/precursors of the sol-gel comprise(s) an alkoxysilane, and d) curing the nonwoven fabric obtained by step c) at a temperature in a range of 50° C. to 150° C.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: October 1, 2019
    Assignee: Universitaet Bayreuth
    Inventors: Andreas Greiner, Seema Agarwal, Mitsunobu Doimoto
  • Publication number: 20190276961
    Abstract: The invention concerns an electrically conductive non-woven fabric which fabric comprises or consists of a three-dimensional network of non-woven non-electrically conductive synthetic nanofibers and electrically conductive metal nanowires distributed therein, wherein the synthetic nanofibers comprise or consist of fibers having a diameter in the range of 10 nm to 2000 nm and a maximal length of 6 mm, wherein the electrically conductive metal nanowires comprise or consist of strands having a diameter in the range of 10 nm to 800 nm and a length in the range of 1 ?m to 500 ?m, wherein the electrically conductive metal nanowires occupy between 0.5% by volume to 5% by volume of said fabric, wherein the electrically conductive metal nanowires and the synthetic nanofibers are homogenously distributed within the electrically conductive non-woven fabric.
    Type: Application
    Filed: October 27, 2017
    Publication date: September 12, 2019
    Applicant: Universität Bayreuth
    Inventors: Andreas Greiner, Seema Agarwal, Markus Langner, Steffen Reich
  • Publication number: 20180171093
    Abstract: The present invention relates to a method for preparing a metallized open-cell foam or fibrous substrate, wherein the method comprises: (A) providing an open-cell foam or fibrous substrate, wherein the open-cell foam or fibrous substrate contains a polymer comprising heteroatom-containing moieties within the bulk of the open-cell foam or fibrous substrate or as a coating on the open-cell foam or fibrous substrate, wherein the polymer comprising heteroatom-containing moieties is selected from polyvinylpyridine, polyvinylpyrrolidone, polyvinyl alcohol, polyallylamine, polyethylene oxide, polyethylene imine, polyethylene sulfide and copolymers or blends thereof; (B) contacting the open-cell foam or fibrous substrate with nanoparticles of a first metal to provide a nanoparticle coated open-cell foam or fibrous substrate; and (C) contacting the nanoparticle coated open-cell foam or fibrous substrate with a solution comprising a salt of a second metal and a reducing agent to provide the metallized open-cell foam or
    Type: Application
    Filed: February 25, 2016
    Publication date: June 21, 2018
    Inventors: Andreas Greiner, Seema Agarwal, Markus Langner
  • Publication number: 20180030623
    Abstract: The invention concerns a powder of fragments of at least one polymeric nanofiber which fragments have a maximal average length of 0.12 mm.
    Type: Application
    Filed: January 21, 2016
    Publication date: February 1, 2018
    Applicant: UNIVERSITAET BAYREUTH
    Inventors: Andreas GREINER, Seema AGARWAL, Markus LANGNER
  • Publication number: 20170294299
    Abstract: In various embodiments, a method is provided. The method may include forming a buried electrically charged region at a predefined position in a first layer in such a way that the buried electrically charged region generates an electric field having a lateral inhomogeneous field distribution above the first layer, and forming a second layer above the first layer using the field distribution in such a way that a structure of the second layer correlates with the position of the buried electrically charged region.
    Type: Application
    Filed: April 12, 2017
    Publication date: October 12, 2017
    Inventors: Heiko Assmann, Felix Braun, Marcus Dankelmann, Stefan Doering, Karsten Friedrich, Udo Goetschkes, Andreas Greiner, Ralf Rudolf, Jens Schneider
  • Publication number: 20170022330
    Abstract: The invention concerns a method for producing a superhydrophobic membrane or surface coating of a substrate from an aqueous phase comprising the following steps: a) Preparing an aqueous dispersion by dispersing particles of hydrophobic polymer(s) in an aqueous solution of protic polymer(s), wherein the protic polymer(s) and the hydrophobic polymer(s) are present in a weight ratio of protic polymer(s):hydrophobic polymer(s) in a range of 5:95 to 22:78, b) electrospinning the dispersion of step a) onto a carrier for producing the membrane or onto the surface for producing the surface coating thereby producing at least one fiber and a nonwoven fabric from the fiber, c) subjecting the nonwoven fabric to a sol-gel process, wherein a precursor/precursors of the sol-gel comprise(s) an alkoxysilane, and d) curing the nonwoven fabric obtained by step c) at a temperature in a range of 50° C. to 150° C.
    Type: Application
    Filed: April 9, 2015
    Publication date: January 26, 2017
    Inventors: Andreas GREINER, Seema AGARWAL, Mitsonobu DOIMOTO
  • Publication number: 20160079182
    Abstract: A method for processing a carrier may include forming at least one recess structure at least one of over and in the carrier; and annealing the at least one recess structure such that at least one hollow chamber is formed by material of the at least one recess structure, wherein the at least one hollow chamber may form an optical alignment structure.
    Type: Application
    Filed: November 24, 2015
    Publication date: March 17, 2016
    Inventors: Tarja Hauck, Alessia Sciré, Dieter Kaiser, Andreas Greiner, Nicolo Morgana, Carolin Wetzig, Dietrich Burmeister
  • Patent number: 9230917
    Abstract: A method for processing a carrier may include forming at least one recess structure at least one of over and in the carrier; and annealing the at least one recess structure such that at least one hollow chamber is formed by material of the at least one recess structure, wherein the at least one hollow chamber may form an optical alignment structure.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: January 5, 2016
    Assignee: INFINEON TECHNOLOGIES DRESDEN GMBH
    Inventors: Tarja Hauck, Alessia Sciré, Dieter Kaiser, Andreas Greiner, Morgana Nicolo, Carolin Wetzig, Dietrich Burmeister
  • Patent number: 9165889
    Abstract: An alignment mark definer is configured to provide a geometrical definition for an actual alignment structure to be formed at a temporary surface of a substrate based on a desired appearance of the alignment mark and on an expected alteration of an appearance of the actual alignment structure caused by a deposition material deposited on the temporary surface and the actual alignment structure.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: October 20, 2015
    Assignee: Infineon Technologies AG
    Inventors: Joerg Ortner, Josef Campidell, Andreas Greiner
  • Patent number: 9068065
    Abstract: The invention at hand provides hydrolytically degradable ionic copolymers. These ionic copolymerizates are composed of one cyclic ketene acetal A, one anionic or cationic methacrylic acid derivative B, selected from 2-methyl-methacrylate, [2-(2-methyl-1-methylene-allyloxy)]ethanesulfonate, [2-(2-methyl-1-methylene-allyloxy)ethyl]phosphonate or a quaternary amine of the N,N-dimethylaminoethylmethacrylic acid (DMAEMA) and, optionally, a neutral methacrylic acid derivative C. The hydrolytically degradable anionic copolymers according to the present invention are produced by polymerizing the components A, B and C in the presence of a radical initiator under inert gas atmosphere and subsequent purification. All copolymers according to the present invention are hydrolytically degradable. Copolymers comprising a maximum of 40 mol-% of ester groups in the backbone are additionally biodegradable, wherein in the case of cationic copolymers a maximum of 20 mol-% of quaternized DMAEMA is allowed to be available.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: June 30, 2015
    Assignee: BASF SE
    Inventors: Andreas Greiner, Seema Agarwal, Thomas Kissel, Liqun Ren
  • Patent number: 9005510
    Abstract: Processes for forming polymer fibers, comprising: (a) providing a colloidal dispersion of at least one essentially water-insoluble polymer in an aqueous medium; and (b) electrospinning the colloidal dispersion; polymer fibers prepared by such processes; and colloidal dispersions comprising: at least one essentially water-insoluble polymer in an aqueous medium; and at least 10% by weight of a water-soluble polymer having a solubility in water of at least 0.1% by weight.
    Type: Grant
    Filed: February 18, 2006
    Date of Patent: April 14, 2015
    Assignee: BASF SE
    Inventors: Michael Ishaque, Andreas Greiner, Joachim H. Wendorff
  • Publication number: 20150000149
    Abstract: An alignment mark definer is configured to provide a geometrical definition for an actual alignment structure to be formed at a temporary surface of a substrate based on a desired appearance of the alignment mark and on an expected alteration of an appearance of the actual alignment structure caused by a deposition material deposited on the temporary surface and the actual alignment structure.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventors: Joerg Ortner, Josef Campidell, Andreas Greiner
  • Publication number: 20140353852
    Abstract: A method for processing a carrier may include forming at least one recess structure at least one of over and in the carrier; and annealing the at least one recess structure such that at least one hollow chamber is formed by material of the at least one recess structure, wherein the at least one hollow chamber may form an optical alignment structure.
    Type: Application
    Filed: May 29, 2013
    Publication date: December 4, 2014
    Applicant: Infineon Technologies Dresden GmbH
    Inventors: Tarja Hauck, Alessia Sciré, Dieter Kaiser, Andreas Greiner, Morgana Nicolo, Carolin Wetzig, Dietrich Burmeister
  • Patent number: 8871881
    Abstract: The invention at hand concerns hydrophobic polymer surfaces, in particular superhydrophobic polymer surfaces, comprising at least one homo- or copolymer, which comprises at least one side chain with at least one fluoro-substituted aryl group. Furthermore, the invention at hand concerns a method for the production of polymer surfaces of this type, their use and polymers of the general formula I: wherein n is an integer between 10 and 4,500, preferably between 20 and 2,200 and particularly preferably between 100 and 670.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: October 28, 2014
    Assignee: Philipps-Universität Marburg
    Inventors: Andreas Greiner, Seema Agarwal, Michael Bognitzki, Sven Horst