Patents by Inventor Takatoshi Kudou

Takatoshi Kudou 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).

  • Patent number: 7150862
    Abstract: A method of manufacturing a powder, by which it is possible to adjust the strength of the obtained powder is provided. The manufacturing method of a powder involves a step of preparing a slurry containing agglomerated particles of a synthetic material which is produced by reacting a first material and a second material under agitation, and a step of drying the slurry to obtain a powder of the synthetic material. The method has a feature that the particle size of the agglomerated particles is adjusted by, in the step of preparing a slurry, controlling agitation power for agitating the slurry. In the step of preparing a slurry, it is preferable that the slurry is initially agitated at a first agitation power, and at the time when the viscosity of the slurry approaches its maximum value, or at the time when the pH value of the slurry reaches the vicinity of the isoelectric point of the synthetic material, the agitation power is lowered from the first agitation power to a second agitation power.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: December 19, 2006
    Assignee: PENTAX Corporation
    Inventors: Tsuyoshi Ishikawa, Masanori Nakasu, Takatoshi Kudou, Yoshiyuki Ogawara, Tsutomu Takahashi, Katsumi Kawamura
  • Publication number: 20030214062
    Abstract: A method of manufacturing a powder, by which it is possible to adjust the strength of the obtained powder is provided. The manufacturing method of a powder involves a step of preparing a slurry containing agglomerated particles of a synthetic material which is produced by reacting a first material and a second material under agitation, and a step of drying the slurry to obtain a powder of the synthetic material. The method has a feature that the particle size of the agglomerated particles is adjusted by, in the step of preparing a slurry, controlling agitation power for agitating the slurry. In the step of preparing a slurry, it is preferable that the slurry is initially agitated at a first agitation power, and at the time when the viscosity of the slurry approaches its maximum value, or at the time when the pH value of the slurry reaches the vicinity of the isoelectric point of the synthetic material, the agitation power is lowered from the first agitation power to a second agitation power.
    Type: Application
    Filed: January 10, 2003
    Publication date: November 20, 2003
    Applicant: PENTAX Corporation
    Inventors: Tsuyoshi Ishikawa, Masanori Nakasu, Takatoshi Kudou, Yoshiyuki Ogawara, Tsutomu Takahashi, Katsumi Kawamura