Patents by Inventor Tomoyuki Sugino

Tomoyuki Sugino 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).

  • Steel for use in exhaust manifolds of automobiles
    Patent number: 5489345
    Abstract: A ferritic stainless steel which exhibits improved formability and which is especially useful for making 950.degree. C. or 1000.degree. C. exhaust manifolds is disclosed, the steel composition thereof consisting essentially of, on the basis of weight:C: 0.02% or less, Si: 1.0% or less,Mn: 1.0% or less, P: 0.04% or less,S: 0.005% or less, Cu: 0.1-1.0%,Cr: 18.0-25.0%, Mo: 1.0 (exclusive)-3.0%,Nb: 0.1-1.0%, Al: 0.20% or less,N: 0.02% or less, B: 0-0.01%,C+N.ltoreq.0.03%,preferably, 21%.ltoreq.Cr+Mo+Nb.ltoreq.25%,Fe and incidental impurities: balance.
    Type: Grant
    Filed: July 24, 1995
    Date of Patent: February 6, 1996
    Assignees: Sumitomo Metal Industries, Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Masao Koike, Mitsuo Miyahara, Kenji Higuchi, Tomoyuki Sugino, Shinji Shibata, Katsuhiko Maruyama
  • Heat-resistant stainless steel foil for catalyst-carrier of combustion exhaust gas purifiers
    Patent number: 5045404
    Abstract: A heat-resistant stainless steel foil for a catalyst-carrier of combustion exhaust gas purifiers, consisting essentially in weight percentage of:more than 0.06 up to 0.15 of Ln, the Ln being a mixture of La, Ce, Pr and Nd;from 8x(%Ln+0.015) /45 to 0.1 of P;from 4.5 to 6.5 of Al;from 13 to 25 of Cr;not more than 0.025 of C;not more than 0.02 of N;not more than 0.03 of C+N; andthe balance consisting of Fe and unavoidable impurities.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: September 3, 1991
    Assignees: Nippon Steel Corporation, Toyota Jidosha Kabushiki Kaisha, Nippon Kinzoku Co., Ltd.
    Inventors: Keiichi Ohmura, Miko Yamanaka, Fumio Fudanoki, Masayuki Tendoh, Kenji Hirashima, Masaaki Kobayashi, Shinji Shibata, Tomoyuki Sugino, Toshihiro Takada, Yoshio Nishizawa, Akihiko Kasahara