Patents by Inventor Takayuki Hatakeyama

Takayuki Hatakeyama 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).

  • Patent number: 11914291
    Abstract: A resist composition comprising a base polymer and an acid generator containing a sulfonium salt which is structured such that an iodized or brominated hydrocarbyl group (exclusive of iodized or brominated aromatic ring) is bonded to a benzene ring via an ester bond-containing group offers a high sensitivity, minimal LWR and improved CDU independent of whether it is of positive or negative tone.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: February 27, 2024
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Jun Hatakeyama, Takayuki Fujiwara
  • Patent number: 11764634
    Abstract: A fan motor waterproof structure includes a fan motor, a disk-shaped member, and a tubular member. The fan motor is arranged with a shaft projecting upward from a motor body. The a disk-shaped member is fitted to an outside of a projecting portion of the shaft of the fan motor on a motor body side. The tubular member is press-fitted onto the disk-shaped member and disposed on an outer periphery of the shaft. The tubular member covers a boundary between an upper surface of the disk-shaped member and the shaft.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: September 19, 2023
    Assignee: Daikin Industries, Ltd.
    Inventors: Teppei Kobata, Jun Ishimaru, Takayuki Hatakeyama
  • Publication number: 20220029499
    Abstract: A fan motor waterproof structure includes a fan motor, a disk-shaped member, and a tubular member. The fan motor is arranged with a shaft projecting upward from a motor body. The a disk-shaped member is fitted to an outside of a projecting portion of the shaft of the fan motor on a motor body side. The tubular member is press-fitted onto the disk-shaped member and disposed on an outer periphery of the shaft. The tubular member covers a boundary between an upper surface of the disk-shaped member and the shaft.
    Type: Application
    Filed: November 7, 2019
    Publication date: January 27, 2022
    Inventors: Teppei KOBATA, Jun ISHIMARU, Takayuki HATAKEYAMA
  • Patent number: 7719216
    Abstract: A motor drive control device for controlling the driving of a brushless motor includes position detecting units (e.g. sensors or Hall elements), a drive signal determining unit and a drive signal outputting unit (an output circuit). The position detecting units are disposed in positions apart from each other by an electric angle of 120 degrees and output position detection signals representing the position of the rotor with respect to the stator. The drive signal determining unit determines drive signals for driving the 3-phase drive coils on the basis of the position detection signals. The drive signal outputting unit generates and outputs, to the 3-phase drive coils, the drive signals that have been determined by the drive signal determining unit.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: May 18, 2010
    Assignee: Daikin Industries, Ltd.
    Inventors: Toshiaki Sato, Takayuki Hatakeyama, Tetsuya Itagaki, Shunsuke Suga
  • Publication number: 20090218969
    Abstract: A motor drive control device for controlling the driving of a brushless motor includes position detecting units (e.g. sensors or Hall elements), a drive signal determining unit and a drive signal outputting unit (an output circuit). The position detecting units are disposed in positions apart from each other by an electric angle of 120 degrees and output position detection signals representing the position of the rotor with respect to the stator. The drive signal determining unit determines drive signals for driving the 3-phase drive coils on the basis of the position detection signals. The drive signal outputting unit generates and outputs, to the 3-phase drive coils, the drive signals that have been determined by the drive signal determining unit.
    Type: Application
    Filed: September 27, 2007
    Publication date: September 3, 2009
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Toshiaki Sato, Takayuki Hatakeyama, Tetsuya Itagaki, Shunsuke Suga