Patents by Inventor Yuuichi Sekine

Yuuichi Sekine 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).

  • Pressure-sensitive resistor and pressure-sensitive sensor using the same
    Patent number: 7068142
    Abstract: A pressure-sensitive sensor includes two base films opposite to each other, a pair of electrodes provided on the two base films, and first and second pressure-sensitive resistors provided by two layers on the electrodes to form a predetermined gap therebetween. Further, a contact state between the first and second pressure-sensitive resistors is changed in accordance with a pressure applied to at least one of the base films, and a resistance between the electrodes is changed in accordance with the contact state between the pressure-sensitive resistors. In addition, each of the pressure-sensitive resistors is constructed with a binder resin having an elasticity modulus in a range between 10 and 1000 Mpa, and electrical conductive particles each of which is coated with a polymer. Accordingly, the pressure-sensitive sensor including the pressure-sensitive resistors can accurately detect a pressure in a range between 1 and 20 kPa.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: June 27, 2006
    Assignee: Denso Corporation
    Inventors: Tomoyasu Watanabe, Kenichi Yanai, Masashi Totokawa, Yuuichi Sekine
  • Pressure-sensitive resistor and pressure-sensitive sensor using the same
    Publication number: 20050128047
    Abstract: A pressure-sensitive sensor includes two base films opposite to each other, a pair of electrodes provided on the two base films, and first and second pressure-sensitive resistors provided by two layers on the electrodes to form a predetermined gap therebetween. Further, a contact state between the first and second pressure-sensitive resistors is changed in accordance with a pressure applied to at least one of the base films, and a resistance between the electrodes is changed in accordance with the contact state between the pressure-sensitive resistors. In addition, each of the pressure-sensitive resistors is constructed with a binder resin having an elasticity modulus in a range between 10 and 1000 Mpa, and electrical conductive particles each of which is coated with a polymer. Accordingly, the pressure-sensitive sensor including the pressure-sensitive resistors can accurately detect a pressure in a range between 1 and 20 kPa.
    Type: Application
    Filed: March 25, 2004
    Publication date: June 16, 2005
    Inventors: Tomoyasu Watanabe, Kenichi Yanai, Masashi Totokawa, Yuuichi Sekine
  • High-resistivity carbon black
    Patent number: 6372349
    Abstract: The present invention relates to a high-resistivity carbon black coated with a resin on the surface and having a volume resistivity of not less than 100 &OHgr;·cm.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: April 16, 2002
    Assignees: Mitsubishi Chemical Corporation, Mikuni Color Ltd.
    Inventors: Hideyuki Hisashi, Satoru Arata, Yuuichi Sekine
  • Carbon black and process for producing the same
    Patent number: 6358487
    Abstract: A carbon black having an average particle size of at most 13 nm, Dmod of at most 80 nm, a D½/Dmod ratio of at most 0.6 and at least pH 5.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: March 19, 2002
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yoshihiro Omae, Nobutake Mise, Yutaka Fukuyama, Yuuichi Sekine, Takaharu Yamamoto, Hiroaki Takehara, Tsuyoshi Yamaguchi, Susumu Nakajima, Masanobu Ishida, Mamoru Nakayama, Hiroshi Maeda