Patents by Inventor Yuuki Tokita

Yuuki Tokita 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).

  • Ionizer and static elimination method
    Patent number: 8018710
    Abstract: The ionizer includes a nozzle having a discharge electrode for inducing corona discharge by application of high voltage to eject ions, an emission port for emitting supplied gas together with the ejected ions, and a gas channel for guiding supplied gas to the emission port. Herein, a velocity of flow of the gas immediately after emission from the emission port exceeds a velocity of sound, and a gas pressure at the emission port is not less than an atmospheric pressure. The gas channel has a throat part for narrowing the gas channel such that a channel area gradually decreases, and a ratio of the atmospheric pressure to a gas pressure at a position where the channel area does not vary, the position being located forward of the throat part, is not more than 0.528.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: September 13, 2011
    Assignee: Keyence Corporation
    Inventors: Tsukasa Fujita, Yuuki Tokita
  • Ionizer and Static Elimination Method
    Publication number: 20100044581
    Abstract: The ionizer includes a nozzle having a discharge electrode for inducing corona discharge by application of high voltage to eject ions, an emission port for emitting supplied gas together with the ejected ions, and a gas channel for guiding supplied gas to the emission port. Herein, a velocity of flow of the gas immediately after emission from the emission port exceeds a velocity of sound, and a gas pressure at the emission port is not less than an atmospheric pressure. The gas channel has a throat part for narrowing the gas channel such that a channel area gradually decreases, and a ratio of the atmospheric pressure to a gas pressure at a position where the channel area does not vary, the position being located forward of the throat part, is not more than 0.528.
    Type: Application
    Filed: July 14, 2009
    Publication date: February 25, 2010
    Applicant: KEYENCE CORPORATION
    Inventors: Tsukasa Fujita, Yuuki Tokita