Patents by Inventor Motoyoshi Wakabayashi

Motoyoshi Wakabayashi 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).

  • Process for the production of alumina suitable for use as a catalyst carrier
    Patent number: 4248852
    Abstract: Improved .gamma.-alumina suitable for use as a catalyst carrier having high mechanical strength, a large specific surface area, and a substantially uniform pore size distribution in a relatively small portion of the pore size range below 500 A. Said alumina is produced by first establishing a seed aluminum hydroxide hydrogel having a pH of between 6 and 10 and then repetitively and sequentially adding an aluminum compound to adjust the pH to less than 5 or more than 11 to dissolve crystallites of aluminum hydroxide followed by addition of a neutralizing agent to return the hydrogel to the pH range from about 6 to 10 to cause pseudo-boehmite crystallites to grow. After a sufficient number of repetitions of said sequential addition, sparse aggregates of crystallites of the desired structure are formed. These are dried and calcined to produce the said alumina.
    Type: Grant
    Filed: August 15, 1979
    Date of Patent: February 3, 1981
    Assignee: Chiyoda Chemical Engineering & Construction Co., Ltd.
    Inventors: Motoyoshi Wakabayashi, Takeo Ono, Osamu Togari, Munekazu Nakamura
  • Catalysts for demetallization treatment of _hydrocarbons supported on sepiolite
    Patent number: 4196102
    Abstract: This invention relates to a catalyst for hydrotreatment of hydrocarbons comprising one or more of metals selected from the group consisting of transition metals and metals of group IIb of the periodic table supported on sepiolite. More particularly it relates to a catalyst effective in the selective demetallization treatment of hydrocarbons.
    Type: Grant
    Filed: May 19, 1978
    Date of Patent: April 1, 1980
    Assignee: Chiyoda Chemical Engineering & Construction Co., Ltd.
    Inventors: Masayoshi Inooka, Motoyoshi Wakabayashi, Masatoshi Matsuda, Masaaki Kasuya, Yoshihoro Ohguchi, Munekazu Nakamura, Tatsuo Morimoto
  • Demetallation of hydrocarbons with catalysts supported on sepiolite
    Patent number: 4152250
    Abstract: This invention relates to a catalyst for hydrotreatment of hydrocarbons comprising one or more of metals selected from the group consisting of transition metals and metals of group IIb of the periodic table supported on sepiolite. More particularly it relates to a catalyst effective in the selective demetallization treatment of hydrocarbons.
    Type: Grant
    Filed: June 15, 1977
    Date of Patent: May 1, 1979
    Assignee: Chiyoda Chemical Engineering & Construction
    Inventors: Masayoshi Inooka, Motoyoshi Wakabayashi, Masatoshi Matsuda, Masaaki Kasuya, Yoshihiro Ohguchi, Munekazu Nakamura, Tatsuo Morimoto
  • Catalysts for demetallization treatment of hydrocarbons supported on sepiolite
    Patent number: RE31036
    Abstract: This invention relates to a catalyst for hydrotreatment of hydrocarbons comprising one or more of metals selected from the group consisting of transition metals and metals of group IIb of the periodic table supported on sepiolite. More particularly it relates to a catalyst effective in the selective demetallization treatment of hydrocarbons.
    Type: Grant
    Filed: November 25, 1980
    Date of Patent: September 21, 1982
    Assignee: Chiyoda Chemical Engineering and Construction Co., Ltd.
    Inventors: Masayoshi Inooka, Motoyoshi Wakabayashi, Masatoshi Matsuda, Masaaki Kasuya, Munekazu Nakamura, Tatsuo Morimoto
  • Catalysts for demetallization treatment of hydrocarbons supported on sepiolite
    Patent number: RE31037
    Abstract: This invention relates to a catalyst for hydrotreatment of hydrocarbons comprising one or more of metals selected from the group consisting of transition metals and metals of group IIb of the periodic table supported on sepiolite. More particularly it relates to a catalyst effective in the selective demetallization treatment of hydrocarbons.
    Type: Grant
    Filed: November 25, 1980
    Date of Patent: September 21, 1982
    Assignee: Chiyoda Chemical Engineering & Construction Co., Ltd.
    Inventors: Masayoshi Inooka, Motoyoshi Wakabayashi, Masatoshi Matsuda
  • Catalysts for demetallization treatment of hydrocarbons supported on sepiolite
    Patent number: RE31038
    Abstract: This invention relates to a catalyst for hydrotreatment of hydrocarbons comprising one or more of metals selected from the group consisting of transition metals and metals of group IIb of the periodic table supported on sepiolite. More particularly it relates to a catalyst effective in the selective demetallization treatment of hydrocarbons.
    Type: Grant
    Filed: November 25, 1980
    Date of Patent: September 21, 1982
    Assignee: Chiyoda Chemical Engineering & Construction Co., Ltd.
    Inventors: Masayoshi Inooka, Motoyoshi Wakabayashi