Patents by Inventor Kenta Hiwatari

Kenta Hiwatari 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).

  • Resin material having non-OHMIC properties, method for producing same, and non-OHMIC resistor using said resin material
    Patent number: 9663644
    Abstract: Provided is a resin material having non-ohmic properties which has favorable characteristics as a varistor and has a high degree of molding freedom and impact resistance. A resin material 10 comprises: an insulating matrix 11 made of a first resin material; an island-form conductive dispersed phase 12 made of a conductive second resin material which is incompatible with the first resin material and is more wettable to a microvaristor 13 described later than the first resin material is, wherein the island-form conductive dispersed phase is dispersed in an island form in the matrix and has a volume ratio of less than 16% in the whole resin material; and a microvaristor 13 comprising ceramic particles having non-ohmic properties, wherein the ceramic particles are dispersed in the matrix 11 and electrically contacted with each other via the island-form conductive dispersed phase 12.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: May 30, 2017
    Assignee: OTOWA ELECTRIC CO., LTD.
    Inventors: Toshihiko Suzuki, Kenta Hiwatari, Naoyuki Tsukamoto, Hideyuki Okinaka
  • RESIN MATERIAL HAVING NON-OHMIC PROPERTIES, METHOD FOR PRODUCING SAME, AND NON-OHMIC RESISTOR USING SAID RESIN MATERIAL
    Publication number: 20160177074
    Abstract: Provided is a resin material having non-ohmic properties which has favorable characteristics as a varistor and has a high degree of molding freedom and impact resistance. A resin material 10 comprises: an insulating matrix 11 made of a first resin material; an island-form conductive dispersed phase 12 made of a conductive second resin material which is incompatible with the first resin material and is more wettable to a microvaristor 13 described later than the first resin material is, wherein the island-form conductive dispersed phase is dispersed in an island form in the matrix and has a volume ratio of less than 16% in the whole resin material; and a microvaristor 13 comprising ceramic particles having non-ohmic properties, wherein the ceramic particles are dispersed in the matrix 11 and electrically contacted with each other via the island-form conductive dispersed phase 12.
    Type: Application
    Filed: September 22, 2014
    Publication date: June 23, 2016
    Inventors: Toshihiko Suzuki, Kenta Hiwatari, Naoyuki Tsukamoto, Hideyuki Okinaka