Patents by Inventor Jan Stark

Jan Stark 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).

  • Patent number: 8658188
    Abstract: Nanoparticulate material containing a matrix and embedded therein a radiopacifier are bioactive, show a high alkaline capacity and are radio-opaque. Compositions and formulations including such material are particularly useful in advanced dental applications, such as dental fillings and/or disinfection.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: February 25, 2014
    Assignees: Universitat Zurich
    Inventors: Wendelin Jan Stark, Dirk Mohn, Matthias Zehnder, Thomas Imfeld
  • Publication number: 20130302832
    Abstract: The present invention relates to a method for detecting a target molecule in a sample by metal dissolution as described in the specification, said method using an electrical readout; to kits adapted for this method and to electrodes suitable for such kits and methods.
    Type: Application
    Filed: October 26, 2011
    Publication date: November 14, 2013
    Applicant: ETH ZURICH
    Inventors: Fabian Kohler, Robert Grass, Wendelin Jan Stark
  • Publication number: 20130299417
    Abstract: Manufacturing processes are provided for nano-porous polymer membranes. Also provided are intermediates suitable to obtain such membranes; polymer membranes as defined herein; shaped articles containing such membranes; and the use of such membranes, shaped articles and intermediates.
    Type: Application
    Filed: July 16, 2013
    Publication date: November 14, 2013
    Inventors: Norman Albert LUCHINGER, Wendelin Jan STARK, Christoph R. KELLENBERGER
  • Publication number: 20120148646
    Abstract: Nanoparticulate material containing a matrix and embedded therein a radiopacifier are bioactive, show a high alkaline capacity and are radio-opaque. Compositions and formulations including such material are particularly useful in advanced dental applications, such as dental fillings and/or disinfection.
    Type: Application
    Filed: August 17, 2010
    Publication date: June 14, 2012
    Applicants: UNIVERSITAT ZURICH, ETH ZURICH
    Inventors: Wendelin Jan Stark, Dirk Mohn, Matthias Zehnder, Thomas Imfeld
  • Publication number: 20110150737
    Abstract: Described is a method for the production of metal salts, wherein the cationic metal is preferably selected from Group I to IV metals and mixtures thereof and the anionic group is selected from phosphates, silicates, sulfates, carbonates, hydroxides, fluorides and mixtures thereof, and wherein said method comprises forming a mixture of at least one metal source that is a metal carboxylate with a mean carbon value per carboxylate group of at least 3 and at least one anion source into droplets and oxiding said droplets in a high temperature environment, preferably a flame. This method is especially suited for the production of calcium phosphate biomaterials such as hydroxyapatite (HAp,Ca10(PO4)6(OH)2) and tricalcium phosphate (TCP,Ca3(PO4)2) that exhibit excellent biocompatibility and osteoconductivity and therefore are widely used for reparation of bony or periodontal defects, coating of metallic implants and bone space fillers.
    Type: Application
    Filed: December 6, 2010
    Publication date: June 23, 2011
    Inventors: Wendelin Jan Stark, Sotiris-Emmanuel Pratsinis, Marek Maciejewski, Stefan Fridolin Loher, Alfons Baiker
  • Patent number: 7879303
    Abstract: Described is a method for the production of metal salts, wherein the cationic metal is preferably selected from Group I to IV metals and mixtures thereof and the anionic group is selected from phosphates, silicates, sulfates, carbonates, hydroxides, fluorides and mixtures thereof, and wherein said method comprises forming a mixture of at least one metal source that is a metal carboxylate with a mean carbon value per carboxylate group of at least 3 and at least one anion source into droplets and oxiding said droplets in a high temperature environment, preferably a flame. This method is especially suited for the production of calcium phosphate biomaterials such as hydroxyapatite (HAp,Cal0(P04)6(OH)2) and tricalcium phosphate (TCP,Ca3(P04)2) that exhibit excellent biocompatibility and osteoconductivity and therefore are widely used for reparation of bony or periodontal defects, coating of metallic implants and bone space fillers.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: February 1, 2011
    Assignee: Eidgenossische Technische Hochschule Zurich
    Inventors: Wendelin Jan Stark, Sotiris-Emmanuel Pratsinis, Marek Maciejewski, Stefan Fridolin Loher, Alfons Baiker
  • Publication number: 20110003037
    Abstract: The present invention relates to food products which are dry and which contain a table salt formulation characterized in that said table salt formulation comprises a mixture of at least two types of particles of one or more physiologically acceptable inorganic salts and at least one of the type of said particles is composed of primary particles of which at least 50 wt % are 5-5000 nanometer in diameter; to manufacturing methods of such food products; further it relates to specific table salt formulations, to manufacturing methods and methods of use of such table salt formulations.
    Type: Application
    Filed: February 4, 2008
    Publication date: January 6, 2011
    Applicant: FRITO-LAY TRADING COMPANY GMBH
    Inventors: Wendelin Jan Stark, Samuel Claude Halim, Eapen George, Carlos Jose Barroso
  • Publication number: 20100196440
    Abstract: The present relates to the field of dental and bone surgery. In particular, the invention relates to fibrous pharmaceutical compositions; fibrous webs, yarns and woven fabrics of such pharmaceutical compositions; to implant material essentially consisting of fibrous pharmaceutical compositions; to the manufacturing and use of such fibers/webs/implant materials.
    Type: Application
    Filed: October 23, 2006
    Publication date: August 5, 2010
    Applicants: ETH ZURICH, Universitat Zurich
    Inventors: Wendelin Jan Stark, Oliver Schneider, Stefan Loher, Tobias Brunner, Marc Simonet, Patrick Schmidlin, Robert N. Grass
  • Publication number: 20100150980
    Abstract: The present invention relates to nanoparticles containing a non-persistent support material and metallic silver particles on the surface of said support material as further specified in the description; to composites containing said nanoparticles; to the manufacture of said nanoparticles and composites and to the use of said nanoparticles and composites.
    Type: Application
    Filed: April 4, 2007
    Publication date: June 17, 2010
    Applicants: Perlen Converting Ag, ETH Zurich
    Inventors: Stefan Bokorny, Wendelin Jan Stark, Stefan Fridolin Loher
  • Publication number: 20100059449
    Abstract: The invention relates to a process for separating a dispersed phase from a continuous phase comprising the steps of i) contacting said phases with an effective amount of nanoparticles; ii) applying a magnetic field gradient to the obtained system; iii) separating the obtained phases wherein said nanoparticles are of the core shell type, said core consists of a metal or alloy having soft magnetic properties and said shell contains a graphene layers which are optionally functionalized; to new nanoparticles and method of manufacturing such nanoparticles.
    Type: Application
    Filed: November 2, 2007
    Publication date: March 11, 2010
    Applicant: ETH Zurich
    Inventors: Robert N. Grass, Wendelin Jan Stark
  • Publication number: 20060229197
    Abstract: Described is a method for the production of pure or mixed metal oxides, wherein at least one metal precursor that is a metal carboxylate with a mean carbon value per carboxylate group of at least 3, e.g. the 2-ethyl hexanoic acid salt, is formed into droplets and e.g. flame oxidized. The method is performed at viscosities prior to droplet formation of usually less than 40 mPa s, obtained by heating and/or addition of one or more low viscosity solvents with adequately high enthalpy.
    Type: Application
    Filed: May 20, 2003
    Publication date: October 12, 2006
    Inventors: Jan Stark, Sotiris Pratsinis