Patents by Inventor Sergej-Tomislay Buljan

Sergej-Tomislay Buljan 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).

  • Publication number: 20060040601
    Abstract: A drum grinding wheel includes an elongated drum configured for coaxial engagement with a spindle of a grinding machine. An exterior surface of the drum extends parallel to a central axis, and a plurality of removable cutters are removably fastened to the exterior surface. Each of the cutters has a plurality of ribs disposed in spaced relation thereon, and abrasive grain is disposed on a grinding face of each of the ribs, such as by use of a metallic braze.
    Type: Application
    Filed: August 23, 2004
    Publication date: February 23, 2006
    Inventors: J. Baldoni, Sergej-Tomislay Buljan, Eric Schulz
  • Patent number: 5279191
    Abstract: A fully dense ceramic-metal body including about 40-68 v/o .alpha.-alumina; about 10-30 v/o of a granular, hard refractory carbide, nitride, or boride; about 20-40 v/o silicon carbide platelets or elongated grains; and about 2-10 v/o of a dispersed metal phase combining Ni and Al mostly segregated at triple points of the microstructure. The preferred metal phase contains a substantial amount of the Ni.sub.3 Al ordered crystal structure. In the preferred body, the reinforcing SiC phase is partially incorporated into the alumina grain, and bridges the grain boundaries. The body including a segregated metal phase is produced by densifying a mixture of the hard phase components and the metal component, with the metal component being present in the mixture as Ni powder and Al powder. The body may be used as a cutting tool for machining nickel superalloys or cast iron at speeds up to about 1000 sfm, feed rates up to about 0.012 in/rev, and depth of cut up to about 0.10 inches.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: January 18, 1994
    Assignee: GTE Valenite Corporation
    Inventor: Sergej-Tomislay Buljan