Patents by Inventor Shiro Mitsuno

Shiro Mitsuno 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).

  • SIC-composite material sleeve and process for producing the same
    Patent number: 6246740
    Abstract: A cylindrical thin-wall sleeve including an SiC fiber-reinforced SiC composite material (SiC/SiC), which has a porosity of 40% or less and a wall thickness of 5 mm or less.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: June 12, 2001
    Assignees: Japan Nuclear Cycle Development Institute, Nippon Carbon Co., Ltd.
    Inventors: Tadashi Maruyama, Shoji Onose, Shiro Mitsuno
  • Ceramic fiber reinforced ceramic matrix composite material and method of producing the same
    Patent number: 6217997
    Abstract: According to a ceramic fiber reinforced ceramic matrix composite material of the present invention, a ceramic fiber reinforced ceramic matrix composite material 1 comprises a composite ceramic matrix, and a preform 5 resulting from a fiber bundle 3 obtained by bundling a plurality of ceramic fibers 2 and disposed therein, and is characterized in that a first ceramic matrix M1 is formed in an inner space of the fiber bundle 3 and at a region adjacent to an outer periphery thereof, and a second ceramic matrix M2 is formed in an inner space of the preform 5 and at an outer peripheral region thereof, the space and region of the preform being defined except for those of the fiber bundle. Also characteristically, ceramic fibers are compositely disposed in a fiber volume fraction (Vf) of greater than 10% in a reaction-sintered ceramic matrix.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: April 17, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shoko Suyama, Tsuneji Kameda, Masahiro Asayama, Nagatoshi Okabe, Hideyuki Hirata, Hiroshi Ichikawa, Yoshikazu Imai, Shiro Mitsuno, Satoshi Miyazaki
  • Heat-resistant and corrosion-resistant composition
    Patent number: 5051207
    Abstract: A heat-resistant, corrosion-resistant composition comprising a metal alcoholate, a curing agent, a filler and an organic solvent.
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: September 24, 1991
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Toshikatsu Ishikawa, Katsuya Tokutomi, Hiroshi Ichikawa, Shiro Mitsuno, Hideto Nagai
  • Heat-resistant, corrosion-resistant inorganic composite bodies and process for preparing the same
    Patent number: 5037699
    Abstract: A heat-resistant, corrosion-resistant inorganic composite body prepared by impregnating a heat-resistant inorganic compound body with at least one member selected from organosilicon compounds, metal alcoholates and organosilicon compound-metal alcoholate copolymers and then heat treating the thus impregnated body; and a process for preparing said heat-resistant, corrosion-resistant inorganic composite body.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: August 6, 1991
    Assignee: Nippon Carbon Co., Ltd.
    Inventors: Hiroshi Ichikawa, Shiro Mitsuno
  • Ceramic fibers and a process for producing the same
    Patent number: 5021370
    Abstract: Ceramic fibers characterized by comprising a quaternary system composed of Si, C, N, and O and having a specific resistance of 10.sup.6 to 10.sup.10 .OMEGA..multidot.cm, and a suitable process for producing the ceramic fibers characterized by reacting infusible polycarbosilane fibers with ammonia and further heat treating the reaction product in an inert gas.
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: June 4, 1991
    Assignee: Nippon Carbon Co, Limited
    Inventors: Toshikatsu Ishikawa, Haruo Teranishi, Hiroshi Ichikawa, Shiro Mitsuno