Patents by Inventor Hirofumi Kase

Hirofumi Kase 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).

  • Method for manufacturing glass base material and glass base material grinding apparatus
    Patent number: 6565417
    Abstract: An apparatus for grinding a glass base material having a core and a clad comprising: a grinding wheel for grinding the clad; a measuring unit for measuring an eccentricity between a center position of the glass base material and a center position of the core at a plurality of positions along a longitudinal direction of the glass base material; a design unit for calculating target diameters substantially continuous throughout the longitudinal direction of the glass base material so that the eccentricity becomes substantially zero for each of the plurality of positions; and a control unit for controlling the grinding wheel to grind the clad so that a diameter of the glass base material to be the target diameter substantially continuous throughout the longitudinal direction of the glass base material based on the target diameters calculated by the design unit.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: May 20, 2003
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Hirofumi Kase, Hiroyuki Koide
  • Method for manufacturing glass base material and glass base material grinding apparatus
    Publication number: 20020050154
    Abstract: An apparatus for grinding a glass base material having a core and a clad comprising: a grinding wheel for grinding the clad; a measuring unit for measuring an eccentricity between a center position of the glass base material and a center position of the core at a plurality of positions along a longitudinal direction of the glass base material; a design unit for calculating target diameters substantially continuous throughout the longitudinal direction of the glass base material so that the eccentricity becomes substantially zero for each of the plurality of positions; and a control unit for controlling the grinding wheel to grind the clad so that a diameter of the glass base material to be the target diameter substantially continuous throughout the longitudinal direction of the glass base material based on the target diameters calculated by the design unit.
    Type: Application
    Filed: October 25, 2001
    Publication date: May 2, 2002
    Inventors: Hirofumi Kase, Hiroyuki Koide