Patents by Inventor Alfred E. Grazen

Alfred E. Grazen 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).

  • Patent number: 4373933
    Abstract: A method of producing long life precision abrasive articles for use in metal removal operations. In this method abrasive particles are impinged against the inner surfaces of a rotating cylindrical mold by centrifugal force. During rotation of the mold a metallic matrix is deposited electrolytically on the inner surfaces of the mold until a matrix supporting the abrasive particles is formed. The matrix is then removed to receive core material and the core is then machined to the finished dimensions. The method is carried out at low temperatures, thereby avoiding heat distortion of the end product.
    Type: Grant
    Filed: May 15, 1981
    Date of Patent: February 15, 1983
    Inventor: Alfred E. Grazen