Patents by Inventor Jo Kakuta

Jo Kakuta 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).

  • RFID tag
    Patent number: 9171244
    Abstract: Provided is an RFID tag, wherein a communication distance of several centimeter or more can be secured and the cost of which can be reduced in comparison to conventional on-chip antennas, even when being compact in size (square shaped with a side of 1.9 to 13 mm). The RFID tag (80) comprises an antenna (20), an IC chip (30) connected to the antenna (20), and a sealing material (10) that seals the IC chip (30) and the antenna (20). The antenna (20) is a coil antenna or a loop antenna, and the resonance frequency (f0) of an electric circuit constituted by the inductance (L) of the antenna (20) and the capacitance (C) of the IC chip (30) is equal to the operation frequency of the IC chip (30), or in the vicinity thereof.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: October 27, 2015
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Toshihiro Endou, Hironori Ishizaka, Masahiko Oota, Kouji Tasaki, Hiroyuki Hosoi, Jo Kakuta, Hiroaki Narita, Hiroki Sato
  • RFID TAG
    Publication number: 20140224887
    Abstract: Provided is an RFID tag, wherein a communication distance of several centimeter or more can be secured and the cost of which can be reduced in comparison to conventional on-chip antennas, even when being compact in size (square shaped with a side of 1.9 to 13 mm). The RFID tag (80) comprises an antenna (20), an IC chip (30) connected to the antenna (20), and a sealing material (10) that seals the IC chip (30) and the antenna (20). The antenna (20) is a coil antenna or a loop antenna, and the resonance frequency (f0) of an electric circuit constituted by the inductance (L) of the antenna (20) and the capacitance (C) of the IC chip (30) is equal to the operation frequency of the IC chip (30), or in the vicinity thereof.
    Type: Application
    Filed: September 27, 2012
    Publication date: August 14, 2014
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Toshihiro Endou, Hironori Ishizaka, Masahiko Oota, Kouji Tasaki, Hiroyuki Hosoi, Jo Kakuta, Hiroaki Narita, Hiroki Sato