Patents by Inventor Yasuo Sekido

Yasuo Sekido 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: 5800790
    Abstract: A filter is provided for treating carbon-based particles in exhaust gas discharged from a diesel internal combustion engine, etc., said filter providing in addition to a high throughput capacity, excellent durability, and good economic and maintenance properties, and a device for treating carbon-based particles in exhaust gas having a high throughput capacity, the regeneration of which is easy. This filter is obtained by cutting an end face of a coiled material that is obtained by winding a sheet of a high-temperature resistant stainless steel having resistance heat-generating properties to produce fibers, gathering the thus-produced fibers to form a web, sintering the web, heat-treating the sintered web to form an alumina film on the surface of the sintered fibers, and optionally supporting a catalyst on the alumina film.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: September 1, 1998
    Assignee: Sintokogio, Ltd.
    Inventors: Masato Imamura, Kiichi Nakajima, Katsumi Jindo, Toshio Asami, Tatsuhiko Kato, Kouichi Ushiroebisu, Yukio Aizawa, Yasuo Sekido, Akira Goto, Tomonari Komiyama
  • Patent number: 5026536
    Abstract: A process is disclosed for producing hydrogen of high purity from hydrocarbons. A selected hydrocarbon feed is contacted with a nickel-containing sorbent of a specified composition at below 50 kg/cm.sup.2 G and at from 150.degree. to 500.degree. C. The hydrocarbon feed thus treated is further reformed with a catalyst of a specified composition.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: June 25, 1991
    Assignees: Nippon Oil Co., Ltd., Petroleum Energy Center
    Inventors: Tomonori Shioiri, Shinichi Satake, Yasuo Sekido, Tokuo Fujisou, Akira Obuchi, Hideharu Kato
  • Patent number: 4731352
    Abstract: A process is disclosed for producing supports suitable for catalysts. Selected inorganic oxide precursors combined with specified amounts of selected olefin-maleic anhydride copolymer salts are blended, molded, dried and calcined whereby strength and specific surface area are greatly improved. Such supports have a specified pore size distribution.
    Type: Grant
    Filed: September 18, 1986
    Date of Patent: March 15, 1988
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Yasuo Sekido, Shinji Takase, Akira Inoue
  • Patent number: 4508849
    Abstract: Provided is a method for the preparation of alumina or silica-alumina catalyst carriers which comprises blending a precursor of alumina or silica-alumina carriers with polytetrafluoroethylene resin particles, warming the blend and subjecting the same to a compression and shearing operation in a blender, followed by drying and baking.
    Type: Grant
    Filed: May 11, 1984
    Date of Patent: April 2, 1985
    Assignee: Nippon Oil Company, Limited
    Inventors: Akira Inoue, Shinji Takase, Yasuo Sekido, Masao Mori, Tatsuki Kubo
  • Patent number: 4483942
    Abstract: A process for the production of hydrogenation catalysts is disclosed which is characterized by the use of citric acid or malic acid as a stabilizer in a specified amount with respect to Group VI metal salts which are used in combination with Group VIII metal salts to produce an impregnating solution. The solution is impregnated with alumina or silica-alumina and calcined to form a catalyst.
    Type: Grant
    Filed: October 11, 1983
    Date of Patent: November 20, 1984
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Yasuo Sekido, Akira Inoue, Masao Mori, Tatsuki Kubo