Patents by Inventor Jan Wendelin Stark

Jan Wendelin 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).

  • Publication number: 20220333095
    Abstract: This disclosure describes particles and techniques for storing oligonucleotides that provide stable, long-term protection yet are also compostable. A core is coated with a layer of oligonucleotides and encapsulated under an outer layer of non-porous, hydrolyzed organosilicon disulfide. The hydrolyzed organosilicon disulfide protects the oligonucleotides from oxidative and thermal damage under typical storage conditions. One suitable organosilicon disulfide is bis(3-triethoxysilylpropyl) disulfide (BTSPD). The oligonucleotides may be retrieved by contacting the particles with a reducing agent that degrades the disulfide bonds in the outer layer. The disulfide bonds enable removal of the protective encapsulation without the use of dangerous chemicals such as hydrogen fluoride. Instead of retrieving the oligonucleotides, the particles may be disposed of in a composting environment. In an implementation, the oligonucleotides are artificially synthesized and encode digital information.
    Type: Application
    Filed: April 14, 2021
    Publication date: October 20, 2022
    Inventors: Bichlien Hoang NGUYEN, Karin STRAUSS, Robert GRASS, Jan Wendelin STARK, Julian Bernhard KOCH
  • Patent number: 8373015
    Abstract: Catalytic methods for the production of saturated hydrocarbons with 2 to 5 carbon atoms per molecule by conversion of small hydrocarbon halides and/or hydrogenation of carbonaceous material are disclosed that result in high yield of saturated C2 to C5 hydrocarbons at reduced corrosion of the reactors and in good lifetime of the catalyst. The methods are performed in the presence of a Lewis acid comprising catalyst and in the absence of oxygen or oxygen containing compounds, whereby an upper limit of at most 50 parts per million mass of oxygen or oxygen containing compounds can be tolerated.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: February 12, 2013
    Assignee: ETH Zürich
    Inventors: Jan Wendelin Stark, Neil Osterwalder
  • Patent number: 8007758
    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: Grant
    Filed: May 20, 2003
    Date of Patent: August 30, 2011
    Assignee: ETH Zurich
    Inventors: Jan Wendelin Stark, Sotiris E. Pratsinis
  • Publication number: 20090306443
    Abstract: Catalytic methods for the production of saturated hydrocarbons with 2 to 5 carbon atoms per molecule by conversion of small hydrocarbon halides and/or hydrogenation of carbonaceous material are disclosed that result in high yield of saturated C2 to C5 hydrocarbons at reduced corrosion of the reactors and in good lifetime of the catalyst. The methods are performed in the presence of a Lewis acid comprising catalyst and in the absence of oxygen or oxygen containing compounds, whereby an upper limit of at most 50 parts per million mass of oxygen or oxygen containing compounds can be tolerated.
    Type: Application
    Filed: March 19, 2007
    Publication date: December 10, 2009
    Applicant: Eth Zurich
    Inventors: Jan Wendelin Stark, Neil Osterwalder