Patents by Inventor Janis Ingerigtsen

Janis Ingerigtsen 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).

  • Process for preparing olivine sand cores and molds
    Patent number: 4396725
    Abstract: An inorganic cement binder for a foundry aggregate comprising, in combination, potassium olivine phosphate and as a hardener therefor, water, aqueous sodium silicate, or aqueous phosphoric acid.
    Type: Grant
    Filed: January 11, 1982
    Date of Patent: August 2, 1983
    Assignee: International Minerals & Chemical Corp.
    Inventors: Charles E. Seeney, John F. Kraemer, Janis Ingerigtsen