Patents by Inventor Alexander Schrey

Alexander Schrey 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).

  • Core material
    Patent number: 7645814
    Abstract: A method for the production of cores and molds for casting molds, based on a base molding material and an organic or inorganic binding agent and an additive. According to the method, pre-forming substances are used in order to dispense with the use of sizing substances and to prevent the formation of ribs.
    Type: Grant
    Filed: April 19, 2003
    Date of Patent: January 12, 2010
    Assignee: Georg Fischer AG
    Inventors: Alexander Schrey, Gotthard Wolf, Rolf Rietzscher
  • Core material
    Publication number: 20050176845
    Abstract: A method for the production of cores and molds for casting molds, based on a base molding material and an organic or inorganic binding agent and an additive. According to the method, pre-forming substances are used in order to dispense with the use of sizing substances and to prevent the formation of ribs.
    Type: Application
    Filed: April 19, 2003
    Publication date: August 11, 2005
    Inventors: Alexander Schrey, Gotthard Wolf, Rolf Rietzscher