Patents by Inventor Hirano Masahiro

Hirano Masahiro 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 fiber for transmitting ultraviolet ray, optical fiber probe, and method of manufacturing the optical fiber probe
    Patent number: 6944380
    Abstract: It is an object of the present invention to provide an optical fiber for transmitting ultraviolet ray which has an improve transmittance and is prevented from deterioration by ultraviolet ray with which it is irradiated. It is another object of the present invention to provide an optical fiber probe which can propagate vacuum ultraviolet ray and deep ultraviolet ray at a high transmittance, is deteriorated only to a limited extent when irradiated with ultraviolet ray and can be etched to have a desired shape of the sharpened section at the fiber end. The present invention provides the optical fiber for transmitting ultraviolet ray which has a core 5 of silica glass containing a given content of fluorine and a clad 6a of silica glass containing a given content of fluorine or boron, a clad 6b of a resin which transmits ultraviolet ray or a clad 6c having air holes H. The clad may be coated with a protective layer and further with a covered layer for protection.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: September 13, 2005
    Assignee: Japan Science and Technology Agency
    Inventors: Hosono Hideo, Hirano Masahiro, Oto Masanori, Tochitani Gen, Ohneda Susumu, Kikugawa Shinnya