Patents by Inventor Kentaro Hanzawa

Kentaro Hanzawa 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: 8120837
    Abstract: A display media particle used for an information display panel having display media constituted of particles sealed between two substrates, at least one of which is transparent, for displaying information by moving the display media, is formed of a mother particle 32 made from materials including a base resin having child particles 33 added to a surface thereof. The base resin is a thermoplastic resin having a viscosity of no more than 1000 Pa·s at 260° C. and a shear rate at 122 s?1, and a heatproof temperature at no less than 430° C. Since optimal conditions of the viscosity and the heatproof temperature are specified, it is possible to round the resin effectively by a heat treatment for spheronization as a post-treatment after manufacturing.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: February 21, 2012
    Assignee: Bridgestone Corporation
    Inventors: Toshiyuki Oosaki, Hideo Ishigouoka, Norihiko Kaga, Kentaro Hanzawa
  • Publication number: 20100245983
    Abstract: A display media particle used for an information display panel having display media constituted of particles sealed between two substrates, at least one of which is transparent, for displaying information by moving the display media, is formed of a mother particle 32 made from materials including a base resin having child particles 33 added to a surface thereof. The base resin is a thermoplastic resin having a viscosity of no more than 1000 Pa·s at 260° C. and a shear rate at 122 s?1, and a heatproof temperature at no less than 430° C. Since optimal conditions of the viscosity and the heatproof temperature are specified, it is possible to round the resin effectively by a heat treatment for spheronization as a post-treatment after manufacturing.
    Type: Application
    Filed: August 5, 2009
    Publication date: September 30, 2010
    Applicant: Bridgestone Corporation
    Inventors: Toshiyuki Oosaki, Hideo Ishigouoka, Norihiko Kaga, Kentaro Hanzawa
  • Publication number: 20100126767
    Abstract: The present invention provides a process for efficiently preparing a light transmissive electromagnetic wave shielding material enhanced in light transmissive property, electromagnetic wave shielding property, appearance and legibility, and having high-accuracy mesh-pattern. The process for the preparation of a light transmissive electromagnetic wave shielding material comprising; printing in the form of mesh a pretreatment agent for electroless plating on a transparent substrate to form a mesh-shaped pretreatment layer, the pretreatment agent comprising a fine particle having an extremely-thin film of noble metal on its surface, and subjecting the mesh-shaped pretreatment layer to electroless plating to form a mesh-shaped metal conductive layer on the pretreatment layer.
    Type: Application
    Filed: March 5, 2008
    Publication date: May 27, 2010
    Applicant: Bridgestone Corporation
    Inventors: Hidefumi Kotsubo, Tatsuya Funaki, Kiyomi Sasaki, Kentaro Hanzawa
  • Publication number: 20080230749
    Abstract: An adhesive agent composition for bonding an electronic component contains a polyester unsaturated compound having a number average molecular weight of 2,000-6,000. The electronic component is bonded by using a film produced by forming the composition into a film.
    Type: Application
    Filed: May 19, 2005
    Publication date: September 25, 2008
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Takahiro Matsuse, Kentaro Hanzawa