Patents by Inventor Yoshinobu Kawano

Yoshinobu Kawano 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).

  • Porous particles, porous hollow particles and method of preparing such particles
    Patent number: 5990183
    Abstract: A first dispersion phase is dispersed in a first continuous phase comprising a solidifying component so as to prepare a primary emulsion, and this primary emulsion s ispersed in a second continuous phase as a second dispersion phase so as to prepare a secondary emulsion. The solidifying component in the secondary emulsion is then solidified, and the first dispersion phase is removed leaving pores so as to form porous particles.
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: November 23, 1999
    Assignee: Reika Kogyo Kabushiki Kaisha
    Inventors: Yoshinobu Kawano, Yasuo Hatate, Toru Taniguchi