Patents by Inventor Osamu Shimobayashi

Osamu Shimobayashi 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: 4676412
    Abstract: Refractory nozzles including a so-called long nozzle, an upper nozzle, a lower nozzle, and an immersion nozzle made from high-alumina refractory material, graphite powder, silica powder and other minor constitutents wherein a major part of the high-alumina refractory material is thermospherized particles of about 0.3 to 3.0 mm in diameter which have good spalling and corrosion resistance. Revolving and rolling ability of the thermospherized particles gives far-reaching capability of pressing force deep into the nozzle center portion during shape-forming by a compaction press. Hence more uniform products can be obtained, and a less expensive unidirectional compaction process can be used instead of a high cost isostatic process for compaction.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: June 30, 1987
    Assignee: Harima Refractories Co., Ltd.
    Inventors: Akihiro Tsuchinari, Osamu Shimobayashi, Hisahiro Hattori