Patents by Inventor Tetsushi Kunitake

Tetsushi Kunitake 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).

  • Patent number: 9623579
    Abstract: Provided are a cutting information determination method that can use a simpler process to improve yield, and a strip-shaped polarizing sheet manufacturing method using such a method, an optical display unit manufacturing method using such a method, a strip-shaped polarizing sheet, and a polarizing sheet material. A cutting position in the width direction A2, in which a polarizing sheet material MP is to be cut along its longitudinal direction A1, is determined based on the numbers of defects counted with respect to plural points in the width direction A2 of the polarizing sheet material MP. This makes it possible to determine the cutting position in such a way that a region with many defects does not fall within the cut width, so that a higher-yield cutting position can be determined. The cutting position can also be determined using a simple process in which defects are counted with respect to plural points in the width direction A2.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: April 18, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Akinori Izaki, Yuu Sugimoto, Seiji Umemoto, Tetsushi Kunitake
  • Publication number: 20140287255
    Abstract: Provided are a cutting information determination method that can use a simpler process to improve yield, and a strip-shaped polarizing sheet manufacturing method using such a method, an optical display unit manufacturing method using such a method, a strip-shaped polarizing sheet, and a polarizing sheet material. A cutting position in the width direction A2, in which a polarizing sheet material MP is to be cut along its longitudinal direction A1, is determined based on the numbers of defects counted with respect to plural points in the width direction A2 of the polarizing sheet material MP. This makes it possible to determine the cutting position in such a way that a region with many defects does not fall within the cut width, so that a higher-yield cutting position can be determined. The cutting position can also be determined using a simple process in which defects are counted with respect to plural points in the width direction A2.
    Type: Application
    Filed: June 3, 2014
    Publication date: September 25, 2014
    Applicant: NITTO DENKO CORPORATION
    Inventors: Akinori Izaki, Yuu Sugimoto, Seiji Umemoto, Tetsushi Kunitake
  • Patent number: 8805565
    Abstract: Provided are a cutting information determination method that can use a simpler process to improve yield, and a strip-shaped polarizing sheet manufacturing method using such a method, an optical display unit manufacturing method using such a method, a strip-shaped polarizing sheet, and a polarizing sheet material. A cutting position in the width direction A2, in which a polarizing sheet material MP is to be cut along its longitudinal direction A1, is determined based on the numbers of defects counted with respect to plural points in the width direction A2 of the polarizing sheet material MP. This makes it possible to determine the cutting position in such a way that a region with many defects does not fall within the cut width, so that a higher-yield cutting position can be determined. The cutting position can also be determined using a simple process in which defects are counted with respect to plural points in the width direction A2.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: August 12, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Akinori Izaki, Yuu Sugimoto, Seiji Umemoto, Tetsushi Kunitake