Patents by Inventor Yasuo Sawayanagi

Yasuo Sawayanagi 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).

  • Direct pouring method using self-fluxing heat-resistant sheets
    Patent number: 4069859
    Abstract: In direct pouring of molten metal for an ingot-making process, hollow long bodies made from self-fluxing heat-resistant sheets are used as a splash-preventive pipe. The self-fluxing heat-resistant sheet is composed of one or more inorganic fibers having fixed softening and fusion temperatures, binders and silicate fillers. The fusion rate and temperature of the sheet are selected in accordance with the teeming rate and temperature to insure that the body end is fused and consumed while being submerged in a given depth below the molten metal surface in a mold.
    Type: Grant
    Filed: February 24, 1976
    Date of Patent: January 24, 1978
    Assignee: Sato Technical Research Laboratory Ltd.
    Inventors: Susumu Nagai, Nobutaka Kanamori, Yasuo Sawayanagi, Takashi Nakagawa