Patents by Inventor Keijiro Hayashi

Keijiro Hayashi 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: 8241558
    Abstract: A high-Cr, high-Ni, heat-resistant, austenitic cast steel comprises as main components C, Si, Mn, Cr, Ni, W and/or Mo, and Nb, the balance being substantially Fe and inevitable impurities, N being 0.01-0.5%, Al being 0.23% or less, and O being 0.07% or less by weight. Exhaust equipment members are produced by using this high-Cr, high-Ni, heat-resistant, austenitic cast steel.
    Type: Grant
    Filed: April 19, 2005
    Date of Patent: August 14, 2012
    Assignee: Hitachi Metals, Ltd.
    Inventors: Keijiro Hayashi, Kenji Itoh, Akinaga Odaira, Koki Otsuka
  • Publication number: 20070217941
    Abstract: A high-Cr, high-Ni, heat-resistant, austenitic cast steel comprises as main components C, Si, Mn, Cr. Ni, W and/or Mo, and Nb, the balance being substantially Fe and inevitable impurities, N being 0.01-0.5%, Al being 0.23% or less, and O being 0.07% or less by weight. Exhaust equipment members are produced by using this high-Cr, high-Ni, heat-resistant, austenitic cast steel.
    Type: Application
    Filed: April 19, 2005
    Publication date: September 20, 2007
    Inventors: Keijiro Hayashi, Kenji Itoh, Akinaga Odaira, Koki Otsuka
  • Publication number: 20060191604
    Abstract: A heat-resistant, austenitic spheroidal graphite cast iron has a composition comprising 1-4.5% by weight of Mo, and 0.001-0.5% by weight of Sn and/or Sb as (2Sn+Sb). It preferably has a composition comprising 1-3.5% of C, 1-6.5% of Si, 3% or less of Cr, 10-40% of Ni, 1-4.5% of Mo, 0.001-0.5% of Sn and/or Sb as (2Sn+Sb), and 0.1% or less of a graphite-spheroidizing element, on a weight basis.
    Type: Application
    Filed: July 20, 2004
    Publication date: August 31, 2006
    Inventors: Kenji Itoh, Keijiro Hayashi, Toru Iwanaga
  • Patent number: 6383310
    Abstract: An exhaust equipment member having an exhaust gas path portion at least partially having a thickness of 5 mm or less is made of a heat-resistant, high-Cr, high-Ni, austenitic cast steel having weight ratios of Cr/Ni of 1.0-1.5 and Mn/S of 5 or more a composition by weight of 0.2-1.0% of C, 2% or less of Si, 2% or less of Mn, 0.04% or less of P, 0.05-0.25% of 5, 20-30% of Cr, and 16-30% of Ni, the balance being substantially Fe and inevitable impurities, with a weight loss by oxidation of 50 mg/cm2 or less when kept in the air at 10100 C. for 200 hours.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: May 7, 2002
    Assignee: Hitachi Metals, Ltd.
    Inventors: Koki Otsuka, Kenji Itoh, Keijiro Hayashi, Norio Takahashi
  • Patent number: 5740424
    Abstract: There is disclosed an information processing system and method capable of coping with a wider range of subjects and intricate changes. In client server structure, time-varying database altering information received from external systems is pooled in servers and distributed to a number of distributed terminals or clients, using broadcasting communication.
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: April 14, 1998
    Assignees: Hitachi, Ltd., Hitachi Process Computer Engineering Inc.
    Inventors: Hiroshi Wataya, Hiroaki Nakanishi, Keijiro Hayashi, Yoshiaki Adachi, Hideki Tonooka, Kenji Matsuzaki, Tsutomu Onuki, Isao Terakado
  • Patent number: 4711462
    Abstract: An injection ski comprises a pair of spaced composite elements and an expanded plastic interposed between the composite elements. The upper composite element is provided with convex portions formed thereon to prevent the composite element from sagging due to its own weight during moulding operation of the ski.
    Type: Grant
    Filed: June 25, 1986
    Date of Patent: December 8, 1987
    Assignee: Mizuno Corporation
    Inventors: Keijiro Hayashi, Toshimi Awano
  • Ski
    Patent number: 4697820
    Abstract: A ski comprises a ski upper-surface constituting member provided with at least one cut portion of any desired shape; and an upper-surface projection member defined by at least one upper-surface member and a reinforcing member which are separately formed, and having the shape of a roof whose ridge is defined by the widthwise central portion thereof. The upper-surface projection member is fitted and secured into the cut portion, thereby to form a roof-shaped projection on the upper-surface constituting member.
    Type: Grant
    Filed: February 3, 1984
    Date of Patent: October 6, 1987
    Assignee: Mizuno Corporation
    Inventors: Keijiro Hayashi, Kenzo Shinya, Yasuo Saeki, Shigeru Asai
  • Ski
    Patent number: 4697821
    Abstract: A ski comprises an upper-surface constituting member provided with a projection which is constituted by an upper-surface member and a reinforcing member, and has the shape of a roof whose ridge is defined by the widthwise central portion of the ski. The upper-surface constituting member is formed on the upper part of the ski.
    Type: Grant
    Filed: February 3, 1984
    Date of Patent: October 6, 1987
    Assignee: Mizuno Corporation
    Inventors: Keijiro Hayashi, Kenzo Shinya, Toshimi Awano, Shigeru Asai
  • Patent number: 4590023
    Abstract: Method of manufacturing an injection-molded ski plate comprising steps of disposing a lower side member in a lower mold, disposing an upper side member in the lower mold, disposing an upper mold formed with a concaved portion corresponding to a roof-like shape with the widthwise central part of the ski plate and injecting a foaming synthetic resin into a hollow space between the lower and upper members and harding after foaming, whereby the upper member is molded following the roof-like concaved portion so that a convexed roof-like portion is formed on the upper member.
    Type: Grant
    Filed: May 14, 1984
    Date of Patent: May 20, 1986
    Assignee: Mizuno Corporation
    Inventors: Keijiro Hayashi, Toshimi Awano, Shigeru Asai
  • Patent number: 4451041
    Abstract: A golf club head comprises a shell of carbon fiber reinforced plastic, a polyulethane core embedded in the shell, a metal sole member having pointed pins extending through the shell into the core to position and retaining the core in the shell and an upwardly converging neck reinforcement embedded in the neck portion of the shell.
    Type: Grant
    Filed: February 4, 1983
    Date of Patent: May 29, 1984
    Assignee: Mizuno Corporation
    Inventors: Keijiro Hayashi, Toshimi Awano, Masayuki Yoshikawa, Kouzou Yazawa, Takashi Ito
  • Patent number: 4451042
    Abstract: A golf club head comprises a shell of carbon fiber reinforced plastic having a core embedded in the shell, the side and bottom of the shell are covered with a metal sole member including its integral side and sole portions, the core is positioned and retained in said shell by inserting a projection or projections on the sole member into the core and a pocket is provided in the sole member for containing weights to be used for weight adjustment of the head or balance adjustment.
    Type: Grant
    Filed: April 7, 1983
    Date of Patent: May 29, 1984
    Assignee: Mizuno Corporation
    Inventors: Keijiro Hayashi, Toshimi Awano, Masayuki Yoshikawa, Kouzou Yazawa, Takashi Ito
  • Patent number: 4449707
    Abstract: A golf club head comprises a shell of carbon fiber reinforced plastic having a core and a reinforcement of carbon fiber fabric embedded in the shell, the side and bottom of the shell are covered with a metal sole member including its integral side and sole portions, the core is positioned and retained in said shell by inserting a projection or projections on the sole member into the core and a pocket is provided in the sole member for containing weights to be used for weight adjustment of the head or balance adjustment.
    Type: Grant
    Filed: May 20, 1983
    Date of Patent: May 22, 1984
    Assignee: Mizuno Corporation
    Inventors: Keijiro Hayashi, Toshimi Awano, Masayuki Yoshikawa, Kouzou Yazawa, Takashi Ito