Patents by Inventor Yoshitaka Onduka

Yoshitaka Onduka 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).

  • 4-fluoro-3-oxocarboxylic esters and process for producing the same
    Patent number: 6593488
    Abstract: The present invention is to provide 4-fluoro-3-oxocarboxylates represented by the following formula (1): wherein R1 represents an alkyl group or an aryl group; R2 and R3 each represent a hydrogen atom or an alkyl group; and R4 represents an alkyl group, and a process for preparing a 4-fluoro-3-oxocarboxylate represented by the above formula (1), which comprises allowing a 2-fluorocarboxylate represented by the following formula (2): wherein R1 and R2 have the same meanings as defined above; and R5 represents an alkyl group, to react with a carboxylate represented by the following formula (3): wherein R3 and R4 have the same meanings as defined above, in the presence of a base.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: July 15, 2003
    Assignee: UBE Industries, Ltd.
    Inventors: Hiroshi Yoshida, Kiyoshi Ohmori, Kensaku Fuse, Kazuhiro Morita, Yoshitaka Onduka, Naoyuki Yokota
  • 6-(1-fluoroalkyl)-4-pyrimidones and processes for producing the same
    Patent number: 6340757
    Abstract: The present invention is to provide a novel 6-(1-fluoroalkyl)-4-pyrimidone represented by the following formula (1): wherein R1 represents an alkyl group; R2 represents a hydrogen atom or an alkyl group; and R3 represents a hydrogen atom, an alkyl group or a chlorine atom, which is important for a synthetic intermediate for aminopyrimidine derivatives which are useful as acaricides, fungicides or nematocides, and processes for producing the same.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: January 22, 2002
    Assignee: Ube Industries, Ltd.
    Inventors: Hiroshi Yoshida, Kiyoshi Ohmori, Kensaku Fuse, Kazuhiro Morita, Yoshitaka Onduka, Naoyuki Yokota