Patents by Inventor Takashi Motoi

Takashi Motoi 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 producing a supported metal catalyst
    Patent number: 6806224
    Abstract: A process for producing a supported metal catalyst which comprises reducing a metal halide in the liquid phase in the presence of a support material, an organic base and a reducing agent. In accordance with the process, the supported metal catalyst which comprises a metal component supported in the highly dispersed condition and exhibits high activity can be obtained easily.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: October 19, 2004
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Jun Yoshihara, Takashi Motoi, Kazuaki Maeshima
  • Process for producing a supported metal catalyst
    Publication number: 20020151433
    Abstract: A process for producing a supported metal catalyst which comprises reducing a metal halide in the liquid phase in the presence of a support material, an organic base and a reducing agent. In accordance with the process, the supported metal catalyst which comprises a metal component supported in the highly dispersed condition and exhibits high activity can be obtained easily.
    Type: Application
    Filed: April 2, 2002
    Publication date: October 17, 2002
    Inventors: Jun Yoshihara, Takashi Motoi, Kazuaki Maeshima
  • Production of tricyclodecane dicarbaldehyde, pentacyclopentadecane dicarbaldehyde and corresponding dimethanols
    Patent number: 6365782
    Abstract: A method of producing tricyclodecane dicarbaldehyde and/or pentacyclopentadecane dicarbaldehyde by the hydroformylation of dicyclopentadiene and/or tricyclopentadiene. The tricyclodecane dicarbaldehyde and/or pentacyclopentadecane dicarbaldehyde in the hydroformylation product liquid are extracted with an extraction solvent comprising a polyhydric alcohol having 2 to 6 carbon atoms. With such extraction, the tricyclodecane dicarbaldehyde and/or pentacyclopentadecane dicarbaldehyde transfer into the extraction solvent while retaining the catalyst components in the hydroformylation solvent. The controlled extraction atmosphere with an oxygen concentration of 1000 ppm or lower prevents the rhodium compound from transferring into the extraction solvent, thereby avoiding the loss of expensive rhodium.
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: April 2, 2002
    Assignee: Mitsbushi Gas Chemical Company, Inc.
    Inventors: Kenichi Nakamura, Kazuhiro Yamada, Takashi Fujii, Takashi Motoi
  • Process for producing dimethylcyanamide
    Patent number: 6262304
    Abstract: Cyanogen chloride and dimethylamine are reacted in a water/organic solvent system. The organic solvent is immiscible with water. After the completion of reaction, the water-immiscible organic solvent is distilled away from the reaction product solution to carry out the subsequent synthesis of 1,1,3,3-tetramethylguanidine in an aqueous system.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: July 17, 2001
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Toshihiro Hashimoto, Takashi Motoi