Patents by Inventor Kazutoshi Tokunaga

Kazutoshi Tokunaga 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).

  • Automatic sample analyzer and its components
    Patent number: 6772650
    Abstract: An automatic sample analyzer includes: a pipette, a pipette driving device which moves the pipette to a sample vessel present in a predetermined position to cause the pipette to suck up a sample from the sample vessel, and then moves the pipette to an open vessel provided in another predetermined position to cause the pipette to discharge the sample into the open vessel, and an analyzing section for analyzing the discharged sample, the pipette driving device comprising a vertically movable main arm and an elongated guide arm cantilevered by the main arm and extending horizontally, the guide arm having a smaller flexural rigidity than the main arm, wherein the main arm vertically moves the pipette when the sample is to be sucked up from the sample vessel, and the guide arm guides the pipette to the open vessel and then vertically moves the pipette when the sample is to be discharged into the open vessel.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: August 10, 2004
    Assignee: Sysmex Corporation
    Inventors: Yasuhiro Ohyama, Kazuyuki Sakurai, Yoichi Nakamura, Noriyoshi Yoshida, Kazutoshi Tokunaga, Kouji Kasuya, Eiji Tanoshima, Toshihiro Kubota, Takaaki Nagai, Shuhei Kaneko, Masaharu Shibata, Seido Biwa, Toshihiro Ootani
  • Automatic sample analyzer and its components
    Publication number: 20030070498
    Abstract: An automatic sample analyzer includes: a pipette, a pipette driving device which moves the pipette to a sample vessel present in a predetermined position to cause the pipette to suck up a sample from the sample vessel, and then moves the pipette to an open vessel provided in another predetermined position to cause the pipette to discharge the sample into the open vessel, and an analyzing section for analyzing the discharged sample, the pipette driving device comprising a vertically movable main arm and an elongated guide arm cantilevered by the main arm and extending horizontally, the guide arm having a smaller flexural rigidity than the main arm, wherein the main arm vertically moves the pipette when the sample is to be sucked up from the sample vessel, and the guide arm guides the pipette to the open vessel and then vertically moves the pipette when the sample is to be discharged into the open vessel.
    Type: Application
    Filed: September 6, 2002
    Publication date: April 17, 2003
    Inventors: Yasuhiro Ohyama, Kazuyuki Sakurai, Yoichi Nakamura, Noriyoshi Yoshida, Kazutoshi Tokunaga, Kouji Kasuya, Eiji Tanoshima, Toshihiro Kubota, Takaaki Nagai, Shuhei Kaneko, Masaharu Shibata, Seido Biwa, Toshihiro Ootani
  • Inner cap for a vessel
    Patent number: D480640
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: October 14, 2003
    Assignee: Sysmex Corporation
    Inventors: Yasuhiro Oyama, Kazuyuki Sakurai, Yoichi Nakamura, Noriyoshi Yoshida, Kazutoshi Tokunaga
  • Vessel
    Patent number: D482793
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: November 25, 2003
    Assignee: Sysmex Corporation
    Inventors: Yasuhiro Oyama, Kazuyuki Sakurai, Yoichi Nakamura, Noriyoshi Yoshida, Kazutoshi Tokunaga, Kouji Kasuya
  • Sample analyzer
    Patent number: D482796
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: November 25, 2003
    Assignee: Sysmex Corporation
    Inventors: Yasuhiro Oyama, Kazuyuki Sakurai, Yoichi Nakamura, Noriyoshi Yoshida, Kazutoshi Tokunaga, Masami Ishizaki