Patents by Inventor Hideki Sakamura

Hideki Sakamura 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).

  • Raney catalyst, process for producing it and process for producing a sugar-alcohol using the same
    Patent number: 6995107
    Abstract: To obtain a Raney catalyst for fixed bed permitting a continuous use with a high initial activity and to produce a high purity sugar-alcohol at a low cost using the same. For this object, sugar-alcohol is produced by: using the powder type Raney catalyst made by using for the hydrogenation under the hydrogen pressure a lump form Raney catalyst made by (i) the first step for melting nickel and aluminum, (ii) the second step for obtaining quenched lump alloy by quenching droplets of said melted mixture and (iii) the third step for classifying and activating said quenched lump alloy as it is or once it is broken, collecting said lump form Raney catalyst, crushing into powder and reactivating, and hydrogenating sugars under the hydrogen pressure.
    Type: Grant
    Filed: November 29, 2004
    Date of Patent: February 7, 2006
    Assignees: Towa Chemical Industry Co., Ltd., Nikko Rica Corporation
    Inventors: Koshiro Shimazu, Yoshiaki Tateno, Mitsuo Magara, Naoki Okamoto, Takao Ohshima, Minoru Nagasawa, Hideki Sakamura
  • Raney catalyst, process for producing it and process for producing a sugar-alcohol using the same
    Publication number: 20050153837
    Abstract: To obtain a Raney catalyst for fixed bed permitting a continuous use with a high initial activity and to produce a high purity sugar-alcohol at a low cost using the same. For this object, sugar-alcohol is produced by: using the powder type Raney catalyst made by using for the hydrogenation under the hydrogen pressure a lump form Raney catalyst made by (i) the first step for melting nickel and aluminum, (ii) the second step for obtaining quenched lump alloy by quenching droplets of said melted mixture and (iii) the third step for classifying and activating said quenched lump alloy as it is or once it is broken, collecting said lump form Raney catalyst, crushing into powder and reactivating, and hydrogenating sugars under the hydrogen pressure.
    Type: Application
    Filed: November 29, 2004
    Publication date: July 14, 2005
    Applicants: Towa Chemical Industry Co., Ltd., Nikko Rica Corporation
    Inventors: Koshiro Shimazu, Yoshiaki Tateno, Mitsuo Magara, Naoki Okamoto, Takao Ohshima, Minoru Nagasawa, Hideki Sakamura
  • Raney catalyst, process for producing it and process for producing a sugar-alcohol using the same
    Patent number: 6414201
    Abstract: To obtain a Raney catalyst for fixed bed permitting a continuous use with a high initial activity and to produce a high purity sugar-alcohol at a low cost using the same. For this object, sugar-alcohol is produced by: using the powder type Raney catalyst made by using for the hydrogenation under the hydrogen pressure a lump form Raney catalyst made by (i) the first step for melting nickel and aluminum, (ii) the second step for obtaining quenched lump alloy by quenching droplets of said melted mixture and (iii) the third step for classifying and activating said quenched lump alloy as it is or once it is broken, collecting said lump form Raney catalyst, crushing into powder and reactivating, and hydrogenating sugars under the hydrogen pressure.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: July 2, 2002
    Assignees: Towa Chemical Industry Co., Ltd., Nikko Rica Corporation
    Inventors: Koshiro Shimazu, Yoshiaki Tateno, Mitsuo Magara, Naoki Okamoto, Takao Ohshima, Minoru Nagasawa, Hideki Sakamura