Patents by Inventor James R. Haligarda

James R. Haligarda 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).

  • Plastic refractory composition suitable for placement by vibrating and the use thereof
    Patent number: 4056398
    Abstract: High alumina, phosphate containing refractory plastic composition suitable for placement by mechanical vibration using molding techniques are maximized in density and shelf life while requiring minimum water content for ease of placement through the combining of a relatively low content of bentonite with a small addition of tetrasodium pyrophosphate. The resulting compositions are easy to place by vibration with minimal tendency to slump on removal of forms.
    Type: Grant
    Filed: March 31, 1977
    Date of Patent: November 1, 1977
    Assignee: Chicago Fire Brick Company
    Inventors: Harold L. Rechter, James R. Haligarda