Patents by Inventor Norihiko Ootaka

Norihiko Ootaka 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: 6927257
    Abstract: A resin composition comprising (A) an elastomeric copolymer which comprises styrene monomeric units and diene monomeric units, and (B) a copolymer which comprises styrene monomeric units and (meth)acrylate monomeric units, which has a saturated water absorption of 0.8% or less at a temperature of 60° C. and a relative humidity of 90%, a flexural modulus of at least 1,800 MPa, a notched Izod impact strength of at least 2 kJ/m2, a total light transmittance of at least 85% and a haze value of 5% or less when providing a sheet having a thickness of 2 mm, and a Vicat softening point of at least 90° C. This resin composition can suitably be used as a base material of a sheet for a screen which has good transparency, suffers from less deformation such as warp or deflection, and is hardly cracked or chipped.
    Type: Grant
    Filed: January 21, 2002
    Date of Patent: August 9, 2005
    Assignees: Sumitomo Chemical Company, Limited, Dai Nippon Printing Co., Ltd.
    Inventors: Katsumi Akada, Norihiko Ootaka
  • Publication number: 20040054087
    Abstract: A resin composition comprising (A) an elastomeric copolymer which comprises styrene monomeric units and diene monomeric units, and (B) a copolymer which comprises styrene monomeric units and (meth)acrylate monomeric units, which has a saturated water absorption of 0.8% or less at a temperature of 60° C. and a relative humidity of 90%, a flexural modulus of at least 1,800 MPa, a notched Izod impact strength of at least 2 kJ/m2, a total light transmittance of at least 85% and a haze value of 5% or less when providing a sheet having a thickness of 2 mm, and a Vicat softening point of at least 90° C. This resin composition can suitably be used as a base material of a sheet for a screen which has good transparency, suffers from less deformation such as warp or deflection, and is hardly cracked or chipped.
    Type: Application
    Filed: July 22, 2003
    Publication date: March 18, 2004
    Inventors: Katsumi Akada, Norihiko Ootaka