Patents Assigned to Prince Minerals, Inc.
  • Anti-Veining Agent for Metal Casting
    Publication number: 20120192764
    Abstract: Additives to foundry sand cores are provided for reducing or eliminating surface defects in metal castings. The additives general comprise an iron oxide component and a glass component which is preferably free of lithium oxide.
    Type: Application
    Filed: January 24, 2012
    Publication date: August 2, 2012
    Applicant: Prince Minerals, Inc.
    Inventors: Jon H. Attridge, Joshua M. Werling
  • Anti-veining agent for metal casting
    Patent number: 8122936
    Abstract: Additives to foundry sand cores are provided for reducing or eliminating surface defects in metal castings. The additives general comprise an iron oxide component and a glass component which is preferably free of lithium oxide.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: February 28, 2012
    Assignee: Prince Minerals, Inc.
    Inventors: Jon H. Attridge, Joshua M. Werling
  • Anti-veining agent for metal casting
    Patent number: 7938169
    Abstract: Additives to foundry sand cores are provided for reducing or eliminating surface defects called veins in metal castings, by reducing the propensity of sand mold and core aggregates to crack during metal casting. The additives generally include an iron oxide component such as magnetite and hematite and a glass component which is preferably free of lithium oxide. The additive may also optionally include an amount of carbon effective to reduce adhesion of sand particles to the casting.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: May 10, 2011
    Assignee: Prince Minerals, Inc.
    Inventors: Jon H. Attridge, Joshua M. Werling
  • Anti-Veining Agent for Metal Casting
    Publication number: 20110048279
    Abstract: Additives to foundry sand cores are provided for reducing or eliminating surface defects in metal castings. The additives general comprise an iron oxide component and a glass component which is preferably free of lithium oxide.
    Type: Application
    Filed: November 9, 2010
    Publication date: March 3, 2011
    Applicant: Prince Minerals, Inc.
    Inventors: Jon H. Attridge, Joshua M. Werling
  • Anti-Veining Agent for Metal Casting
    Publication number: 20090314461
    Abstract: Additives to foundry sand cores are provided for reducing or eliminating surface defects in metal castings. The additives generally comprise an iron oxide component and a glass component which is preferably free of lithium oxide.
    Type: Application
    Filed: June 20, 2008
    Publication date: December 24, 2009
    Applicant: Prince Minerals, Inc.
    Inventors: Jon H. Attridge, Joshua M. Werling