Patents by Inventor Tomoko Uehara

Tomoko Uehara 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 composition containing liquid crystal polyester
    Patent number: 8821755
    Abstract: A liquid composition containing a liquid crystal polyester, comprising (1) 15 to 40% by weight of a liquid crystal polyester, and (2) 60 to 85% by weight of a solvent containing N-methylpyrrolidone, wherein the liquid composition has a viscosity of 1.5 Pa·s or larger measured at 23° C., and the total of the liquid crystal polyester and the solvent is 100% by weight.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: September 2, 2014
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Tomoko Uehara
  • Liquid crystalline polyester and molded article thereof
    Patent number: 8337719
    Abstract: The present invention provides a resin composition containing a liquid crystalline polyester and a high dielectric material filler. The present invention also provides a molded article of the liquid crystalline polyester resin composition. The liquid crystalline polyester resin composition of the present invention comprises 50 to 80% by volume of a liquid crystalline polyester which has 40% by mol or more of a 2,6-naphthalenediyl group as an aromatic group, also has a flow initiation temperature of 280° C. or higher, and shows a melt tension of 1 g or more measured at a temperature higher than flow initiation temperature; and 20 to 50% by volume of a high dielectric material filler. The liquid crystalline polyester resin composition can be formed into composition pellets easily and stably by a strand method, and a molded article obtained from the liquid crystalline polyester resin composition is excellent in flexural strength and dielectric characteristics.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: December 25, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tomoya Hosoda, Tomoko Uehara, Satoshi Okamoto
  • LIQUID COMPOSITION CONTAINING LIQUID CRYSTAL POLYESTER
    Publication number: 20120248375
    Abstract: A liquid composition containing a liquid crystal polyester, comprising (1) 15 to 40% by weight of a liquid crystal polyester, and (2) 60 to 85% by weight of a solvent containing N-methylpyrrolidone, wherein the liquid composition has a viscosity of 1.5 Pa·s or larger measured at 23° C., and the total of the liquid crystal polyester and the solvent is 100% by weight.
    Type: Application
    Filed: March 21, 2012
    Publication date: October 4, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Tomoko UEHARA
  • Resin composition and molded article using the same
    Patent number: 8025814
    Abstract: The present invention provides a resin composition comprising a liquid crystal polymer and a filler comprising a composite oxide containing Ba, Sm, and Ti. The resin composition can provide a molded article which has excellent dielectric characteristics and is excellent in dimension stability.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: September 27, 2011
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tomoko Uehara, Tomoya Hosoda, Satoshi Okamoto
  • LIQUID CRYSTALLINE POLYESTER AND MOLDED ARTICLE THEREOF
    Publication number: 20100271268
    Abstract: The present invention provides a resin composition containing a liquid crystalline polyester and a high dielectric material filler. The present invention also provides a molded article of the liquid crystalline polyester resin composition. The liquid crystalline polyester resin composition of the present invention comprises 50 to 80% by volume of a liquid crystalline polyester which has 40% by mol or more of a 2,6-naphthalenediyl group as an aromatic group, also has a flow initiation temperature of 280° C. or higher, and shows a melt tension of 1 g or more measured at a temperature higher than flow initiation temperature; and 20 to 50% by volume of a high dielectric material filler. The liquid crystalline polyester resin composition can be formed into composition pellets easily and stably by a strand method, and a molded article obtained from the liquid crystalline polyester resin composition is excellent in flexural strength and dielectric characteristics.
    Type: Application
    Filed: December 2, 2008
    Publication date: October 28, 2010
    Inventors: Tomoya Hosoda, Tomoko Uehara, Satoshi Okamoto
  • RESIN COMPOSITION AND MOLDED ARTICLE USING THE SAME
    Publication number: 20090315783
    Abstract: The present invention provides a resin composition comprising a liquid crystal polymer and a filler comprising a composite oxide containing Ba, Sm, and Ti. The resin composition can provide a molded article which has excellent dielectric characteristics and is excellent in dimension stability.
    Type: Application
    Filed: June 18, 2009
    Publication date: December 24, 2009
    Inventors: Tomoko UEHARA, Tomoya HOSODA, Satoshi OKAMOTO