Patents by Inventor Kentarou Yachi

Kentarou Yachi 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).

  • Publication number: 20070184353
    Abstract: A volume hologram recording material is provided that has high sensitivity, good storage stability after recording, and a large interference fringe refractive index difference, the material being used for forming a volume hologram recording film desirable as a data recording system. A volume hologram recording medium comprising same is also provided. The hologram recording material comprises as constituents a polymer matrix having a three-dimensional crosslinking structure, a polymerizable monomer, and a tertiary amine compound, and the polymer matrix is formed in the presence of the polymerizable monomer by a polymerization reaction that is different from a polymerization reaction of the polymerizable monomer.
    Type: Application
    Filed: February 9, 2005
    Publication date: August 9, 2007
    Inventors: Shin Satou, Eiichi Okazaki, Kentarou Yachi, Satoshi Hattori
  • Publication number: 20070172742
    Abstract: A volume hologram recording material is provided that has high sensitivity, good storage stability after recording, and a large interference fringe refractive index difference, the material being used for forming a volume hologram recording film desirable as a data recording system. A volume hologram recording medium comprising same is also provided. The volume hologram recording material is a polymer matrix having a three-dimensional crosslinking structure having a plurality of reactive groups, the polymer matrix being capable of recording, by means of refractive index difference, interference fringes that result from the interference of coherent light, the material not having a polymerizable monomer as a constituent.
    Type: Application
    Filed: February 9, 2005
    Publication date: July 26, 2007
    Inventors: Kentarou Yachi, Shin Satou, Satoshi Hattori, Eiichi Okazaki