Patents by Inventor Haruka Ishikawa

Haruka Ishikawa 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).

  • Vacuum cleaner having an ion generator
    Patent number: 7174593
    Abstract: A vacuum cleaner includes an electric blower for generating a suction air flow, a suction head in communication with the electric blower for drawing in dirt, a filter bag communication with the electric blower for capturing and collecting dirt, an exhaust unit for discharging exhaust air from the electric blower to atmosphere, and an ion generator for generating negative ions and/or positive ions. The ion generator is placed between the suction head and the filter bag.
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: February 13, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masakuni Soejima, Yasushi Kondo, Yoshihiro Taniguchi, Ryohei Yoshida, Masaki Shibuya, Seiji Yamaguchi, Saburo Kajikawa, Hidenori Kitamura, Hiroyuki Uratani, Kouichi Fujita, Haruka Ishikawa
  • Vacuum cleaner having an ion generator
    Publication number: 20030140444
    Abstract: A vacuum cleaner includes an electric blower for generating a suction air flow, a suction head in communication with the electric blower for drawing in dirt, a filter bag communication with the electric blower for capturing and collecting dirt, an exhaust unit for discharging exhaust air from the electric blower to atmosphere, and an ion generator for generating negative ions and/or positive ions. The ion generator is placed between the suction head and the filter bag.
    Type: Application
    Filed: December 26, 2002
    Publication date: July 31, 2003
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masakuni Soejima, Yasushi Kondo, Yoshihiro Taniguchi, Ryohei Yoshida, Masaki Shibuya, Seiji Yamaguchi, Saburo Kajikawa, Hidenori Kitamura, Hiroyuki Uratani, Kouichi Fujita, Haruka Ishikawa