Patents by Inventor Fuyuo Ueyama

Fuyuo Ueyama 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 6-methyl-3-hepten-2-one and 6-methyl-2-heptanone analogues, and process for producing phytone or isophytol
    Patent number: 6232506
    Abstract: Provided are a process for producing 6-methyl-3-hepten-2-one by cross aldol condensation carried out while each continuously adding to acetone, isovaleraldehyde and an aqueous alkali containing an alkaline substance; a process for producing a 6-methyl-2-heptanone analogue represented by Formula (1): wherein n is an integer of 0 or 1 or more; which comprises allowing hydrogen, acetone and an aldehyde represented by Formula (2): wherein n is as defined above; X and Y each represents a hydrogen atom or they are coupled together to form a carbon-carbon bond; and Z and W each represents a hydrogen atom or they are coupled together to form a carbon-carbon bond; to react in the presence of an aqueous alkali containing an alkaline substance, and a hydrogenation catalyst; and a process for producing phytone or isophytol using the 6-methyl-3-hepten-2-one or the 6-methyl-2-heptanone analogue.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: May 15, 2001
    Assignee: Kuraray Co., Lyd.
    Inventors: Yoichi Kido, Noriaki Kumagai, Hideharu Iwasaki, Takashi Onishi, Fuyuo Ueyama
  • Process for producing 6-methyl-3-hepten-2-one and 6-methyl-2-heptanone analogues, and process for producing phyton or isophytol
    Patent number: 5955636
    Abstract: Provided are a process for producing 6-methyl-3-hepten-2-one by cross aldol condensation carried out while each continuously adding to acetone, isovaleraldehyde and an aqueous alkali containing an alkaline substance; a process for producing a 6-methyl-2-heptanone analogue represented by Formula (1): ##STR1## wherein n is an integer of 0 or 1 or more; which comprises allowing hydrogen, acetone and an aldehyde represented by Formula (2): ##STR2## wherein n is as defined above; X and Y each represents a hydrogen atom or they are coupled together to form a carbon-carbon bond; and Z and W each represents a hydrogen atom or they are coupled together to form a carbon-carbon bond;to react in the presence of an aqueous alkali containing an alkaline substance, and a hydrogenation catalyst; and a process for producing phyton or isophytol using the 6-methyl -3-hepten-2-one or the 6-methyl-2-heptanone analogue.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: September 21, 1999
    Assignee: Kuraray Co., Ltd.
    Inventors: Yoichi Kido, Noriaki Kumagai, Hideharu Iwasaki, Takashi Onishi, Fuyuo Ueyama