Patents by Inventor Douglas Trinowski

Douglas Trinowski 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).

  • Silicic ester modified phenol/formaldehyde novolaks and their use for the production of resin coated substrates
    Patent number: 9890295
    Abstract: This invention relates to a resin preparable by reaction of a phenol/formaldehyde novolak with tetraethyl orthosilicate in a mass ratio above 28:1, wherein the phenol of the phenol/formaldehyde novolak is substituted or unsubstituted hydroxybenzene or a mixture of two or more such phenols, and to a particulate material coated with said resin. Said particles can be used e.g. in the shell molding process for the production of shell molds and shell cores; and as proppants for use in the hydraulic fracturing process.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: February 13, 2018
    Assignee: HUTTENES-ALBERTUS CHEMISCHE WERKE GMBH
    Inventors: Nicolas Egeler, Marek Torbus, Milan Knezevic, Gee Ho Bae, Robert Laitar, Douglas Trinowski, Wolfgang Seelbach
  • SILICIC ESTER MODIFIED PHENOL/FORMALDEHYDE NOVOLAKS AND THEIR USE FOR THE PRODUCTION OF RESIN COATED SUBSTRATES
    Publication number: 20140090306
    Abstract: This invention relates to a resin preparable by reaction of a phenol/formaldehyde novolak with tetraethyl orthosilicate in a mass ratio above 28:1, wherein the phenol of the phenol/formaldehyde novolak is substituted or unsubstituted hydroxybenzene or a mixture of two or more such phenols, and to a particulate material coated with said resin. Said particles can be used e.g. in the shell molding process for the production of shell molds and shell cores; and as proppants for use in the hydraulic fracturing process.
    Type: Application
    Filed: April 20, 2012
    Publication date: April 3, 2014
    Applicant: Huettenes-Albertus Chemische Werke GmbH
    Inventors: Nicolas Egeler, Marek Torbus, Milan Knezevic, Gee Ho Bae, Robert Laitar, Douglas Trinowski, Wolfgang Seelbach