Patents by Inventor Masakuni Sasaki

Masakuni Sasaki 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).

  • Compound having dopant introduced into vacant lattice point while controlling position and concentration
    Patent number: 6787069
    Abstract: A compound obtained by incorporating atoms Cz into vacant lattice points of a crystal represented by the general formula AxBy (wherein A is a cation; B is an anion; and x and y satisfy an electrically neutral stoichiometric ratio) while controlling the introduction with respect to position and/or concentration (C is an atom capable of forming an ion which has an arbitrary valence and is introduced into a vacant lattice point of the crystal of the compound AxBy; and z is from 0 to the number corresponding to the concentration of vacant lattice points in AxBy).
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: September 7, 2004
    Assignee: Japan Science and Technology Agency
    Inventors: Shigemi Kohiki, Ryuta Kiyoshima, Shigenori Matsushima, Masakuni Sasaki
  • Gasification power generation system using preheated gasifying-agent to gasify fuel
    Patent number: 6167691
    Abstract: A gasification power generation system includes: a gasifying section for allowing a fuel, such as coal, to react with a gasifying agent, such as air, to produce a gasified product gas; a power-generating section for generating electricity using energy obtained by burning the gasified product gas, which is produced by the gasifying section; and a preheating section for preheating the gasifying agent supplied to the gasifying section, to a self ignition temperature of, e.g., about 1000° C. The preheating section raises the temperature of air supplied into the gasifying section, to a high temperature of about 1000° C. when a fossil fuel, such as coal, is used as the fuel. Thus, it is possible to achieve gasification power generation with a high generating efficiency using inexpensive, simple constructions and to realize a stable and low NOx combustion of the gasified product gas.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: January 2, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kunio Yoshikawa, Keiji Murata, Michio Hori, Takashi Ogawa, Masakuni Sasaki, Masafumi Fukuda
  • Separators and method of manufacturing the same
    Patent number: 5378247
    Abstract: A method of manufacturing a separator for forming a current collector and edge plate by placing a die and an outer frame for surrounding the die on a press head, placing a thin material plate and a soft plate, and pressing the thin material plate through the soft plate. When the current collector and the edge plate are made press working, cut working and joint working such as welding, can be omitted. Accordingly, the residual stress which is intrinsic to such workings is prevented. Thus, no stress is released by the temperature rise involved in the fuel cell operation and the members of the fuel cell do not become distorted. Additionally, the method provides high productivity.
    Type: Grant
    Filed: February 5, 1992
    Date of Patent: January 3, 1995
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masakuni Sasaki, Yasushi Shimizu, Teruo Yamaguchi, Kiyotaka Tanaka