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: 20100292623
    Abstract: The present invention relates to a process for producing electrospun fibers comprising polyethyleneimine nanoparticles (PEIN). The use of PEIN permits the antibacterial finishing of electrospinnable polymers, provided that these polyethyleneimine nanoparticles are particles of derivatized polyethyleneimine (PEI), since pure underivatized PEI has no antibacterial action. Preference is given to using quaternized polyethyleneimine. The electrospinnable polymers can be coated with PEIN during and/or after the electrospinning. The polymeric fibers obtainable by the process according to the invention can be used for textile fibers, for example for the production of fibers for functional apparel or for fibrous nonwoven webs or fibrous mats for cell culture substrates.
    Type: Application
    Filed: October 17, 2007
    Publication date: November 18, 2010
    Applicant: SCHOELLER TEXTIL AG
    Inventors: Andreas Greiner, Thorsten Röcker
  • Publication number: 20100286303
    Abstract: A process for preparing polyaryl ethers in which a polycondensation of the monomer building blocks is carried out using microwave irradiation leads to thermoplastic molding compositions having improved color properties.
    Type: Application
    Filed: November 11, 2008
    Publication date: November 11, 2010
    Applicant: BASF SE
    Inventors: Martin Weber, Volker Warzelhan, Faissal-Ali El-Toufaili, Andreas Greiner, Heiner Stange, Seema Agrarwal
  • Publication number: 20100255185
    Abstract: The invention relates to a method for the production of an electrically conductive polycarbonate composite on the basis of thermoplastic polycarbonate and carbon nanotubes, wherein acid-functionalized carbon nanotubes are dispersed with molten polycarbonate.
    Type: Application
    Filed: November 25, 2008
    Publication date: October 7, 2010
    Applicant: Bayer MaterialScience AG
    Inventors: Stefan Bahnmueller, Andreas Greiner, Markus Schackmann
  • Publication number: 20100221519
    Abstract: The present invention relates to a process for producing polymer fibers, especially nano- and mesofibers, by electrospinning a colloidal dispersion of at least one essentially water-insoluble polymer in an aqueous medium, and to fibers obtainable by this process, to textile fabrics comprising the inventive fibers, and to the use of the inventive fibers and of the inventive textile fabrics.
    Type: Application
    Filed: July 10, 2008
    Publication date: September 2, 2010
    Applicant: BASF SE
    Inventors: Rajan Venkatesh, Evgueni Klimov, Michel Pepers, Walter Heckmann, Jürgen Schmidt-Thümmes, Vijay Immanuel Raman, Andreas Greiner, Aleksandar Stoiljkovic
  • Publication number: 20100063226
    Abstract: The present invention relates to a to a norbornene-based polymer having a low dielectric constant and low-loss properties, and an insulating material, a printed circuit board and a functional device using the same. More particularly, it relates to a norbornene-based polymer expressed by the following formula (1): wherein, at least one of R1 to R4 is independently substituted or unsubstituted linear C4-C31 arylalkyl or substituted or unsubstituted branched C4-C31 arylalkyl; the rest of R1 to R4 are each and independently H, substituted or unsubstituted linear C1-C3 alkyl, or substituted or unsubstituted branched C1-C3 alkyl; and n is an integer of 250 to 400.
    Type: Application
    Filed: February 19, 2009
    Publication date: March 11, 2010
    Inventors: Jae-Choon Cho, Do-Yeung Yoon, Jun-Rok Oh, Hwa-Young Lee, Sung-Taek Lim, Andreas Greiner
  • Publication number: 20100048858
    Abstract: The present invention relates to a poly(p-xylylene)-based polymer having a low dielectric constant suitable for low loss dielectrics (LLD), and an insulating material, a printed circuit board and a functional element using the same. More particularly, the poly(p-xylylene)-based polymer includes at least one repeat unit expressed by the following formula (1): wherein, at least one of R1, R2, R7 and R8 is independently substituted or unsubstituted C6-C20 aryl; the rest of R1 to R8 are each and independently H, substituted or unsubstituted linear C1-C3 alkyl, or substituted or unsubstituted branched C1-C3 alkyl; and n is an integer of 400 to 900.
    Type: Application
    Filed: February 12, 2009
    Publication date: February 25, 2010
    Inventors: Jae-Choon CHO, Andreas Greiner, Do-Yeung Yoon, Jun-Rok Oh, Keun-Yong Lee, Moon-Soo Park
  • Publication number: 20100013126
    Abstract: The present invention relates to a process for producing polymer fibers, especially nano- and mesofibers, by the electrospinning process, in which a colloidal dispersion of at least one essentially water-insoluble polymer and of at least one nonionic surfactant, if appropriate further comprising at least one water-soluble polymer, is electrospun in an aqueous medium. The present invention further relates to fibers obtainable by this process.
    Type: Application
    Filed: August 20, 2007
    Publication date: January 21, 2010
    Inventors: Michael Ishaque, Michel Pepers, Walter Heckmann, Evgueni Klimov, Andreas Greiner, Joachim H. Wendorff, Aleksandar Stoiljkovic
  • Publication number: 20090186998
    Abstract: Fluorinated paracyclophane compounds represented by the formula: where least one of R1 and R2 comprises a fluorinated moiety is disclosed. These compounds can be utilized as precursor dimer compounds to produce polymeric coatings comprising copolymers of trifluorinated paraxylylene, including flexible fluorinated paraxylylene coatings.
    Type: Application
    Filed: December 9, 2008
    Publication date: July 23, 2009
    Applicant: SPECIALTY COATING SYSTEMS, INC.
    Inventors: Phillip Hanefeld, Sven Horst, Markus Meise, Michael Bognitzki, Andreas Greiner, Rakesh Kumar
  • Publication number: 20090148701
    Abstract: The invention relates to a method for producing metal oxide fibers with diameters on the micro- and nanometric scale by using electrospinning. At least one polymer is dissolved in a solvent, a metal salt is dissolved in this polymer solution, and this mixture is subsequently electrospun into fibers. Breaking down the polymer renders metal oxide fibers accessible that can be optionally reduced into the corresponding metal fibers.
    Type: Application
    Filed: August 25, 2006
    Publication date: June 11, 2009
    Inventors: Joachim H. Wendorff, Andreas Greiner, Michael Bognitzki, Martin Graeser
  • Publication number: 20090130301
    Abstract: Apparatus and method for producing electrically conducting nanostructures by means of electrospinning, the apparatus having at least a substrate holder (1), a spinning capillary (2), connected to a reservoir (3) for a spinning liquid (4) and to an electrical voltage supply (5), an adjustable movement unit (6, 6?) for moving the spinning capillary (2) and/or the substrate holder (1) relative to one another, an optical measuring device (7) for monitoring the spinning procedure at the outlet of the spinning capillary (2), and a computer unit (8) for controlling the drive of the spinning capillary (2) relative to the substrate holder (1) in accordance with the spinning procedure.
    Type: Application
    Filed: August 27, 2008
    Publication date: May 21, 2009
    Applicant: Bayer MaterialScience AG
    Inventors: Stefan Bahnmuller, Andreas Greiner, Joachim H. Wendorff, Roland Dersch, Jacob Belardi, Max Von Bistram, Stefanie Eiden, Stephan Michael Meier
  • Publication number: 20090032461
    Abstract: The subject matter of the invention is an innovative method for the separation of polymer systems regarding their molecular weight, chemical structure, chain architecture, and colloidal additives. Such separations are currently accomplished by selective precipitation from solution, by a fractionated crystallization also from solution, and by means of gel chromatographic methods. The invention pertains to a separation of polymer systems by means of permeation through polymer films—semi-crystalline, cross-linked, amorphous—with thicknesses in a nanometer scale. The restriction to thicknesses in a nanometer scale is essential for a high throughput of polymers. Of particular significance is the selectivity towards colloidal additives with a structure that is not in chain form.
    Type: Application
    Filed: December 17, 2003
    Publication date: February 5, 2009
    Inventors: Andreas Greiner, Joachim H. Wendorff, Phillip Hanefeld, Stefan Kreiling
  • Publication number: 20090010870
    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: Application
    Filed: February 23, 2006
    Publication date: January 8, 2009
    Inventors: Andreas Greiner, Seema Agarwal, Michael Bognitzki, Sven Horst
  • Publication number: 20090004086
    Abstract: The present invention relates to processes for producing nanowires and nanotubes by treating a fiber comprising at least one support material and at least one thermoelectrically active material or a precursor compound of a thermoelectrically active material, to a nanowire comprising at least one thermoelectrically active material and having a diameter of ?200 nm and a length of ?1 mm, to nanotubes comprising at least one thermoelectrically active material and having a diameter of ?200 nm, a wall thickness of ?30 nm and a length of ?1 mm, and to the use of the nanowires or nanotubes for thermoelectric heating, for electricity generation, in sensors or for temperature control.
    Type: Application
    Filed: November 30, 2006
    Publication date: January 1, 2009
    Applicant: BASF SE
    Inventors: Klaus Kuhling, Martin Graeser, Joachim H. Wendorff, Andreas Greiner
  • Patent number: 7462750
    Abstract: Fluorinated paracyclophane compounds represented by the formula where least one of R1 and R2 comprises a fluorinated moiety is disclosed. These compounds can be utilized as precursor dimer compounds to produce polymeric coatings comprising copolymers of trifluorinated paraxylylene.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: December 9, 2008
    Assignee: Specialty Coating Systems, Inc.
    Inventors: Phillip Hanefeld, Sven Horst, Markus Meise, Michael Bognitzki, Andreas Greiner, Rakesh Kumar
  • Publication number: 20080261043
    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: Application
    Filed: February 18, 2006
    Publication date: October 23, 2008
    Applicant: BASF Aktiengesellschaft
    Inventors: Andreas Greiner, Joachim H. Wendorff, Michael Ishaque
  • Publication number: 20080213590
    Abstract: The invention relates to supports consisting of nanoscalar polymer fibres, polymer tubes or hollow fibres for the application and targeted and/or delayed release of ingredients, in particular, agricultural active ingredients. The invention also relates to a method and a device for the production of supports of this type in a charged or empty state. The method and device use electrospinning technology.
    Type: Application
    Filed: May 30, 2005
    Publication date: September 4, 2008
    Inventors: Andreas Greiner, Hans E. Hummel, Joachim H. Wendorff, Matthias Becker, Ronald Dersch
  • Publication number: 20070228606
    Abstract: Structures in the nanoscale and mesoscale domain are provided. The structures may have a shell which can be comprised of a porous polymeric material such as parylene. The surfaces of the shell can further comprise pendant functional groups that can provide reactive or passive characteristics. A method of producing nanoscale structures utilizing a porous substrate is further disclosed.
    Type: Application
    Filed: October 11, 2005
    Publication date: October 4, 2007
    Applicant: Specialty Coating Systems, Inc.
    Inventors: Phillip Hanefeld, Olaf Kriha, Andreas Greiner, Rakesh Kumar
  • Publication number: 20070099019
    Abstract: Fluorinated paracyclophane compounds represented by the formula where least one of R1 and R2 comprises a fluorinated moiety is disclosed. These compounds can be utilized as precursor dimer compounds to produce polymeric coatings comprising copolymers of trifluorinated paraxylylene.
    Type: Application
    Filed: October 31, 2005
    Publication date: May 3, 2007
    Applicant: Specialty Coating Systems, Inc.
    Inventors: Phillip Hanefeld, Sven Horst, Markus Meise, Michael Bognitzki, Andreas Greiner, Rakesh Kumar
  • Patent number: 7105228
    Abstract: The present invention relates to a method for making shaped structures with internally coated cavities with an inside diameter in the nanometer to micrometer range and the shaped structure obtained thereby.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: September 12, 2006
    Assignee: TransMIT Gesellschaft fuer Technologietransfer mbH
    Inventors: Johannes Averdung, Andreas Greiner, Joachim H. Wendorff, Haoquing Hou, Michael Bognitzki, Jun Zeng
  • Publication number: 20060083770
    Abstract: An implantable device having a coating with an eluting membrane and a permeable membrane disposed on a surface of the device is provided. The eluting membrane is typically a polymeric material capable of being infused with a biologically active, therapeutic substance. The permeable membrane is typically a polymeric material having a thickness that controls the rate of transport of the biologically active material to a target tissue. The polymeric materials are typically parylene or derivatives thereof.
    Type: Application
    Filed: October 15, 2004
    Publication date: April 20, 2006
    Applicant: Specialty Coating Systems, Inc.
    Inventors: Andreas Greiner, Phillip Hanefeld, Rakesh Kumar