Patents by Inventor Yuji Kagamitani

Yuji Kagamitani 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).

  • Self-Coated Single Crystal, And Production Apparatus And Process Therefor
    Publication number: 20080008438
    Abstract: It is an object of the present invention to provide a self-coated single crystal that without any special step conducted after crystal growth, has its circumference coated with a layer of different properties. A self-coated single crystal according to the present invention is characterized in that in operations comprising melting crystal materials for a core and a clad in a single crucible and carrying out growth of a single crystal through a pulling up method or a pulling down method, a grown single crystal in an as-growth condition has its circumference self-coated with a clad whose refractive index is lower than that of the core.
    Type: Application
    Filed: April 11, 2005
    Publication date: January 10, 2008
    Applicant: TOHOKU TECHNO ARCH CO., LTD.
    Inventors: Tsuguo Fukuda, Akira Yoshikawa, Yuji Kagamitani