Patents by Inventor Hiyoyuki Kato

Hiyoyuki Kato 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).

  • Liquid-crystal polyester resin
    Publication number: 20050054811
    Abstract: The present invention provides a liquid-crystalline polyester resin which comprises monomer units derived from 2-hydroxy-3-naphthoic acid and/or 2-hydroxynaphthalene-3,6-dicarboxylic acid in an amount of 1-5000 mmol % based on the total monomer components of the resin and an alkaline metal compound in an amount of 10-3000 ppm as alkaline metal based on the total monomer components of the resin. The liquid-crystalline polyester resin of the present invention has good colorability, improved heat resistance and good mechanical properties.
    Type: Application
    Filed: November 25, 2002
    Publication date: March 10, 2005
    Inventors: Ryuzo Ueno, Masaya Kitayama, Kiichi Kometani, Hiyoyuki Kato, Kazunori Ueda