Patents by Inventor Rikizou Hatakeyama

Rikizou 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: 7379326
    Abstract: A high-capacity magnetic memory capable of writing and reading a magnetic record in/from a magnetic recording film according to a perpendicular magnetic recording system at a high speed in a purely-electrically random access manner. In the magnetic memory, a writing-magnetic-field generating means 62 and a writing word line 43 are disposed relative to a perpendicular magnetic recording film 50, and a reading/writing bit-line conductor 41, a magnetoresistive-effect element 20 and a reading word lead conductor 42 are laminated in order on a probe substrate opposed to the perpendicular magnetic recording film 50. A magnetic probe 30 composed of a carbon nanotube containing a soft magnetic material is disposed relative to the magnetoresistive-effect element 20 in a standing manner, and electrically connected to the reading/writing bit-line conductor.
    Type: Grant
    Filed: May 1, 2003
    Date of Patent: May 27, 2008
    Assignee: UMK Technologies Co., Ltd.
    Inventors: Takashi Ushida, Nobuyuki Mori, Yoshimi Kamijo, Akihiro Okazaki, Akira Mitsuzuka, Rikizou Hatakeyama, Hideaki Ido, Ko Nakajima, Takehiro Takoshima
  • Publication number: 20060092542
    Abstract: Disclosed is a high-capacity magnetic memory capable of writing and reading a magnetic record in/from a magnetic recording film according to a perpendicular magnetic recording system at a high speed in a purely-electrically random access manner. In the magnetic memory, a writing-magnetic-field generating means 62 and a writing word line 43 are disposed relative to a perpendicular magnetic recording film 50, and a reading/writing bit-line conductor 41, a magnetoresistive-effect element 20 and a reading word lead conductor 42 are laminated in order on a probe substrate opposed to the perpendicular magnetic recording film 50. A magnetic probe 30 composed of a carbon nanotube containing a soft magnetic material is disposed relative to the magnetoresistive-effect element 20 in a standing manner, and electrically connected to the reading/writing bit-line conductor.
    Type: Application
    Filed: May 1, 2003
    Publication date: May 4, 2006
    Applicant: UMK Technologies Co., Ltd.
    Inventors: Takashi Ushida, Nobuyuki Mori, Yoshimi Kamijo, Akihiro Okazaki, Akira Mitsuzuka, Rikizou Hatakeyama, Hideaki Ido, Ko Nakajima, Takehiro Takoshima