Patents by Inventor Tadahiro Hiraike

Tadahiro Hiraike 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).

  • Optical multilayer film and optical semiconductor device including the same
    Patent number: 7267893
    Abstract: An optical multilayer film includes: a first layer; a second layer that contains titanium oxynitride as a main component; and a third layer that contains magnesium fluoride as a main component; the first layer that has a different refractive index from that of the second layer or the third layer; and the first layer, the second layer, and the third layer being part of a laminated structure that includes a plurality of reflection planes. The thickness of the third layer is smaller than ΒΌ wavelength.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: September 11, 2007
    Assignee: Fujitsu Quantum Devices Limited
    Inventors: Nobumasa Okada, Tadahiro Hiraike
  • Optical multilayer film and optical semiconductor device including the same
    Publication number: 20040043259
    Abstract: An optical multilayer film includes: a first layer; a second layer that contains titanium oxynitride as a main component; and a third layer that contains magnesium fluoride as a main component; the first layer that has a different refractive index from that of the second layer or the third layer; and the first layer, the second layer, and the third layer being part of a laminated structure that includes a plurality of reflection planes. The thickness of the third layer is smaller than ¼ wavelength.
    Type: Application
    Filed: August 27, 2003
    Publication date: March 4, 2004
    Applicant: FUJITSU QUANTUM DEVICES LIMITED
    Inventors: Nobumasa Okada, Tadahiro Hiraike