Patents by Inventor Fusaki Kimura

Fusaki Kimura 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).

  • Silica glass crucible and method of fabricating thereof
    Patent number: 6652934
    Abstract: A silica glass crucible 1 having &agr; of 0.05 or less over a thickness of 0.5 mm or more from the inner surface of the silica glass crucible, &agr; being obtained by dividing the fluorescent intensity integrated over a wavelength range of 4,000 cm−1 and 4,100 cm−1 by the fluorescent intensity integrated at a wavelength of 800 cm−1 where an SiO peak appears as determined by subjecting a section of the thickness of the silica glass crucible to laser Raman spectroscopy involving excitation by laser beam of 514 nm, and an OH group concentration of 100 ppm or less over the entire periphery beyond a thickness of at least 1.0 mm from the inner surface of the silica glass crucible.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: November 25, 2003
    Assignee: Toshiba Ceramics Co., Ltd.
    Inventors: Atsuro Miyao, Kiyoaki Misu, Kazuhiko Takariki, Izumi Kawakami, Kouzou Kitano, Naoyuki Obata, Hiroshi Yamaguchi, Fusaki Kimura