Patents by Inventor Seiju Uchida

Seiju Uchida 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).

  • Method for melting Ti or a high-Ti alloy in CaO refractories
    Patent number: 4710481
    Abstract: Ti or a high-Ti alloy is melted in a container composed of high-purity CaO materials on its inner sides. The materials are composed of not less than 99% by weight of CaO, not more than 0.1% by weight of SiO.sub.2, not more than 0.02% by weight of Fe.sub.2 O.sub.3, and not more than 0.5% by weight in total of other metal oxides under a non-oxidizing atmosphere.CaO refractories for use in the melting of Ti or a high-Ti alloy contains not less than 99% by weight of CaO, not more than 0.1% by weight of SiO.sub.2, 0.02% by weight of Fe.sub.2 O.sub.3, and not more than 0.5% by weight of other metal oxides.
    Type: Grant
    Filed: September 11, 1986
    Date of Patent: December 1, 1987
    Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.
    Inventors: Toru Degawa, Gen Okuyama, Akio Hashimoto, Seiju Uchida, Kouzou Fujiwara, Makoto Ebata, Takashi Satou, Tohei Ototani
  • Method for production of lanthanide-containing alloy
    Patent number: 4695427
    Abstract: A lanthanide-containing alloy is produced by retaining the melt of this alloy by the use of a container having the inner surface formed of a calcia-based refractory possessing a CaO content of not less than 90% by weight in a non-oxidizing atmosphere.
    Type: Grant
    Filed: November 5, 1986
    Date of Patent: September 22, 1987
    Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.
    Inventors: Toru Degawa, Kozo Fujiwara, Akio Hashimoto, Seiju Uchida, Gen Okuyama, Susumu Matsui