Patents by Inventor Atsushi Takamuku

Atsushi Takamuku 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).

  • Hydrophobic fumed silica
    Patent number: 7507389
    Abstract: A hydrophobic fumed silica treated with a cyclic dimethylsiloxane, the hydrophobic fumed silica having an M-value representing an oleophilic degree in a range of 48 to 65, a tapping bulk density of not smaller than 80 g/L but not larger than 130 g/L, and an n-value representing the dispersion of 3.0 to 3.5 as measured in toluene. The hydrophobic fumed silica features a high bulk density while exhibiting a high hydrophobic property, the powder thereof capable of being favorably handled, being easily mixed in a matrix such as of a resin within short periods of time, and, further, being dispersed in the matrix to a high degree.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: March 24, 2009
    Assignee: Tokuyama Corporation
    Inventors: Yoshio Mitani, Katsumi Nagase, Atsushi Takamuku
  • Hydrophobic fumed silica
    Publication number: 20060269465
    Abstract: A hydrophobic fumed silica treated with a cyclic dimethylsiloxane, the hydrophobic fumed silica having an M-value representing an oleophilic degree in a range of 48 to 65, a tapping bulk density of not smaller than 80 g/L but not larger than 130 g/L, and an n-value representing the dispersion of 3.0 to 3.5 as measured in toluene. The hydrophobic fumed silica features a high bulk density while exhibiting a high hydrophobic property, the powder thereof capable of being favorably handled, being easily mixed in a matrix such as of a resin within short periods of time, and, further, being dispersed in the matrix to a high degree.
    Type: Application
    Filed: April 30, 2004
    Publication date: November 30, 2006
    Inventors: Yoshio Mitani, Katsumi Nagase, Atsushi Takamuku