Patents by Inventor Toshinari Sakurai

Toshinari Sakurai 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).

  • Chip for use in nucleic acid separation, structural element and process for forming the structural element
    Patent number: 6162356
    Abstract: Composite particles formed from resin particles and silica particles (amount of silica particles: 0.2 to 10 wt. % on the basis of the resin particles) in an apparatus for formation of composite particles are placed in a PTFE mold and heat treated to weld the resin particles to one another, thereby forming a structural element, which is dipped in an ethyl silicate solution containing monodispersed silica particles, then taken out of the solution and subjected to further heat treatment to form an ultimate structural element, which is sealed in a tip case, whereby a tip can be produced at a low cost and used to separate nucleic acid from a liquid sample for a short time at a high recovery rate without any defects such as breaking, etc.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: December 19, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Yukiko Ikeda, Yoshishige Endo, Yasuhiro Yoshimura, Takao Terayama, Kenji Yasuda, Toshinari Sakurai, Tetsuo Yokoyama, Takanori Aono