Patents by Inventor Stefan Bahnmuller

Stefan Bahnmuller 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: 20140319431
    Abstract: An electrically conductive printable composition comprises silver particles, a dispersing agent, a solvent, a first surfactant, comprising a hydrocarbon based surfactant, and a second surfactant, comprising a fluoro-based surfactant.
    Type: Application
    Filed: June 13, 2012
    Publication date: October 30, 2014
    Applicant: BAYER INTELLECTUAL PROPERTY GMBH
    Inventors: Daniel Rudhardt, Frank Sicking, Stefanie Eiden, Venkataramanan Balasubramaniam, Stefan Bahnmuller, Rachel Tessy Mathew, Fransiska Cecilia Kartawidjaja
  • Publication number: 20140299821
    Abstract: The invention relates to a method for producing a metal nanoparticle dispersion, in particular a silver nanoparticle dispersion, wherein after the production of nanoscale metal particles, stabilized by means of at least one auxiliary dispersing agent containing at least one free carboxylic acid group or salt thereof as a functional group, in at least one liquid dispersant (solvent), flocculation of the metal nanoparticles is deliberately caused, the formed metal nanoparticle flocculation is dispersed again in at least one liquid dispersant, optionally by adding a base, and the metal nanoparticle dispersion is set to a desired metal nanoparticle concentration. The invention further relates to a metal nanoparticle dispersion, in particular a silver nanoparticle dispersion, in particular produced by means of the method according to the invention, and to the use of said metal nanoparticle dispersion.
    Type: Application
    Filed: October 30, 2012
    Publication date: October 9, 2014
    Applicant: BAYER INTELLECTUAL PROPERTY GMBH
    Inventors: Daniel Rudhardt, Bibin Thomas Anto, Chaiman Deivaraj Thelvanayagam, Fransiska Cecilia Kartawidiala, Stefan Bahnmuller
  • Publication number: 20090226684
    Abstract: Aqueous, printable compositions comprising carbon nanotubes and a polymeric dispersing agent, wherein at least one fifth of the carbon nanotubes have a molecular structure comprising a plurality of stacked and rolled graphene layers; processes for preparing such compositions, methods of use and electrically conductive coatings prepared therewith.
    Type: Application
    Filed: February 13, 2009
    Publication date: September 10, 2009
    Applicant: Bayer MaterialScience AG
    Inventors: Stefan Bahnmuller, Stefanie Eiden, Olaf Behrend, Diana Dimova Landen, Matthias Boll
  • 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: 20090061213
    Abstract: Method for producing small and micro conductive structures on surfaces by (hot) stamping and/or nanoscale imprinting microstructures on the surfaces, targeting conductive material into the channels thus created with the aid of capillary action, and appropriately after-treating the conductive material.
    Type: Application
    Filed: July 11, 2008
    Publication date: March 5, 2009
    Applicant: Bayer MaterialScience AG
    Inventors: Stefan Bahnmuller, Stefanie Eiden, Stephan Michael Meier, Christian Etienne Hendriks, Ulrich Schubert
  • Publication number: 20080177098
    Abstract: Process for the preparation of nanoscale metal-organic frameworks, and porous frameworks synthesized from at least one metal ion and at least one at least bidentate organic compound and a monodentate growth inhibitor.
    Type: Application
    Filed: October 11, 2007
    Publication date: July 24, 2008
    Inventors: Stefan Bahnmuller, Gerhard Langstein, Roland A. Fischer, Stephen Hermes