Patents by Inventor Asami Kitajima

Asami Kitajima 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).

  • Polyphenylene sulfide-based heat-shrinkable tube and component covered with the tube
    Patent number: 8361575
    Abstract: The present invention provides a heat-shrinkable polyphenylene sulfide-based tube containing a resin composition (A) including a thermoplastic polyphenylene sulfide-based resin (a) as a main constituent, having a difference of 35° C. or more between the cold crystallization temperature Tc as measured by a differential scanning calorimetry in accordance with JIS-K7121 and the glass transition temperature Tg measured in the same manner, and having the glass transition temperature Tg between 65° C. and 85° C.; and the invention provides a component covered with the tube. The heat-shrinkable polyphenylene sulfide-based tube fulfills the characteristics required for a heat-shrinkable tube, such as heat resistance, low-temperature shrinkage characteristics, electrical characteristics, chemical resistance, and electrolytic solution resistance.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: January 29, 2013
    Assignee: Mitsubishi Plastics, Inc.
    Inventors: Motoi Yamashita, Hidetaka Arai, Kouichirou Taniguchi, Asami Kitajima
  • POLYPHENYLENE SULFIDE-BASED HEAT-SHRINKABLE TUBE AND COMPONENT COVERED WITH THE TUBE
    Publication number: 20110171409
    Abstract: The present invention provides a heat-shrinkable polyphenylene sulfide-based tube containing a resin composition (A) including a thermoplastic polyphenylene sulfide-based resin (a) as a main constituent, having a difference of 35° C. or more between the cold crystallization temperature Tc as measured by a differential scanning calorimetry in accordance with JIS-K7121 and the glass transition temperature Tg measured in the same manner, and having the glass transition temperature Tg between 65° C. and 85° C.; and the invention provides a component covered with the tube. The heat-shrinkable polyphenylene sulfide-based tube fulfills the characteristics required for a heat-shrinkable tube, such as heat resistance, low-temperature shrinkage characteristics, electrical characteristics, chemical resistance, and electrolytic solution resistance.
    Type: Application
    Filed: September 8, 2009
    Publication date: July 14, 2011
    Applicant: MITSUBISHI PLASTICS, INC.
    Inventors: Motoi Yamashita, Hidetaka Arai, Kouichirou Taniguchi, Asami Kitajima
  • RESIN COMPOSITION USED FOR HEAT-SHRINKABLE MEMBER, HEAT-SHRINKABLE TUBE COMPOSED OF THE RESIN COMPOSITION, AND MEMBER COVERED BY THE TUBE
    Publication number: 20100104783
    Abstract: A resin composition used for a heat-shrinkable member: at least one plasticizer; and a polyphenylene sulfide resin (a), at least one tan ? peak existing within the temperature range between 65 and 95° C. as measured by dynamic viscoelasticity at an oscillation frequency of 10 Hz, a strain of 0.1%, and a temperature increase rate of 3° C./min.
    Type: Application
    Filed: March 14, 2008
    Publication date: April 29, 2010
    Applicant: Mitsubishi Plastics, Inc.
    Inventors: Asami Kitajima, Motoi Yamashita, Takashi Hiruma, Hirotsugu Fujita, Jun Takagi