Patents by Inventor Norikatsu Sasao

Norikatsu Sasao 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).

  • Holographic recording medium
    Publication number: 20070224541
    Abstract: A holographic recording medium has a recording layer, including a matrix formed of a polymer of spiroorthoester of an epoxy compound, a radical-polymerizable compound, and a photoinitiator.
    Type: Application
    Filed: March 15, 2007
    Publication date: September 27, 2007
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Rumiko Hayase, Akiko Hirao, Kazuki Matsumoto, Norikatsu Sasao, Takahiro Kamikawa
  • Holographic recording medium
    Publication number: 20070072089
    Abstract: A holographic recording medium has a recording layer, the recording layer including a matrix material, a polymerizable monomer having at least one ethylenic unsaturated bond, a photo-iniferter, and a photoinitiator.
    Type: Application
    Filed: September 27, 2006
    Publication date: March 29, 2007
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Norikatsu Sasao, Akiko Hirao, Rumiko Hayase, Kazuki Matsumoto
  • Optical recording medium
    Publication number: 20070065624
    Abstract: An optical recording medium is provided and includes: a recoding layer; and a reproduction control layer on an light incidence side of the recording layer, the reproduction control layer including a photopolymerization initiator and a photopolymerizable compound.
    Type: Application
    Filed: September 15, 2006
    Publication date: March 22, 2007
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kazuki Matsumoto, Rumiko Hayase, Norikatsu Sasao, Akiko Hirao
  • Holographic recording medium
    Publication number: 20070030541
    Abstract: A holographic recording medium has a recording layer including a radical-polymerizable compound, a first photo-radical polymerization initiator (A) containing a titanocene compound, and a second photo-radical polymerization initiator (B) containing at least one compound selected from the group consisting of an amino acetophenone derivative, an acylphosphine oxide derivative, a benzyl derivative, and a thioxanthone derivative.
    Type: Application
    Filed: March 28, 2006
    Publication date: February 8, 2007
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Rumiko Hayase, Akiko Hirao, Kazuki Matsumoto, Norikatsu Sasao
  • Hologram recording medium
    Publication number: 20060115740
    Abstract: A hologram recording medium includes: first and second translucent substrates; and a recording layer, which is formed between the first and second substrates, contains a three-dimensionally crosslinked polymer matrix, a radical polymerizable compound and a photoradical polymerization initiator, shows a rubber-like elasticity at the room temperature, and has a durometer hardness within a range of A45 to A85.
    Type: Application
    Filed: November 23, 2005
    Publication date: June 1, 2006
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Rumiko Hayase, Akiko Hirao, Norikatsu Sasao, Takayuki Tsukamoto, Kazuki Matsumoto