Patents by Inventor Victor Ruldolph

Victor Ruldolph 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).

  • Silica membranes and process of production thereof
    Patent number: 6943123
    Abstract: A method of producing a weakly branched silica membranes coated onto a substrate using a two-step catalysed hydrolysis sol-gel process. A tetraethylorthosilicate (TEOS)/ethanol solution is formed and placed in an ice bath. An acid/water solution is formed and added to the TEOS/ethanol solution, to form a TEOS/ethanol/acid/water solution, which inturn is refluxed. A two-step sol is prepared by adding water and nitric acid to the refluxed TEOS/ethanol/acid/water solution and initiating a two-step sol-gel process. From the two-step sol a membrane film layer is deposited on a substrate, for use in a number of applications, including selective separation of gases.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: September 13, 2005
    Assignee: The University of Queensland
    Inventors: Victor Ruldolph, Joao Carlos Diniz Da Costa, GaoQing Lu
  • Silica membranes and process of production thereof
    Publication number: 20040038044
    Abstract: A method of producing a weakly branched silica membranes coated onto a substrate using a two-step catalysed hydrolysis sol-gel process. A tetraethylorthosilicate (TEOS)/ethanol solution is formed and placed in an ice bath. An acid/water solution is formed and added to the TEOS/ethanol solution, to form a TEOS/ethanol/acid/water solution, which inturn is refluxed. A two-step sol is prepared by adding water and nitric acid to the refluxed TEOS/ethanol/acid/water solution and initiating a two-step sol-gel process. From the two-step sol a membrane film layer is deposited on a substrate, for use in a number of applications, including selective separation of gasses.
    Type: Application
    Filed: August 15, 2003
    Publication date: February 26, 2004
    Inventors: Victor Ruldolph, Joao Carlos Diniz Da Costa, GaoQing Lu