Patents by Inventor Noboru Sugahara

Noboru Sugahara 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).

  • Evaporating material for producing optical thin film
    Patent number: 5578536
    Abstract: An evaporation material is employed to form an optical thin film which is adapted to be formed on an optical element such as a lens or the like. The evaporation material is provided such that zirconium oxide (ZrO.sub.2) is mixed with a titanium oxide (TiO.sub.A) having a molar ratio A(O/Ti) of oxygen to titanium in a range of 1.0 to 1.75 so that the mixture assumes a molar ratio (Ti/Zr) of titanium to zirconium in a range of 1.0 to 4.0. The mixture is sintered or fused and solidified.
    Type: Grant
    Filed: April 24, 1995
    Date of Patent: November 26, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Kameyama, Noboru Sugahara, Mitsuharu Sawamura, Junji Terada, Junichi Sakamoto