Patents by Inventor Miki Nagatomo

Miki Nagatomo 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 waveguide sensor, device, system and method for glucose measurement
    Patent number: 7054514
    Abstract: An optical waveguide sensor for glucose measurement comprises a substrate, a first optical waveguide layer formed on a surface of the substrate, an entrance grating and an exit grating which are formed contacting with the first optical waveguide layer and being spaced from each other, a second optical waveguide layer located between the entrance grating and the exit grating while being in contact with the first optical waveguide layer, the second optical waveguide layer having a higher refractive index than that of the first optical waveguide layer, and a functioning layer containing an enzyme and a coloring reagent which is formed on the second optical waveguide layer.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: May 30, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenichi Uchiyama, Ichiro Tono, Hideo Eto, Miki Nagatomo
  • Optical waveguide sensor, device, system and method for glucose measurement
    Patent number: 6903815
    Abstract: An optical waveguide sensor for glucose measurement comprises a substrate, a first optical waveguide layer formed on a surface of the substrate, an entrance grating and an exit grating which are formed contacting with the first optical waveguide layer and being spaced from each other, a second optical waveguide layer located between the entrance grating and the exit grating while being in contact with the first optical waveguide layer, the second optical waveguide layer having a higher refractive index that that of the first optical waveguide layer, and a functioning layer containing an enzyme and a coloring reagent which is formed on the second optical waveguide layer.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: June 7, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenichi Uchiyama, Ichiro Tono, Hideo Eto, Miki Nagatomo
  • Optical waveguide sensor, device, system and method for glucose measurement
    Publication number: 20030225322
    Abstract: An optical waveguide sensor for glucose measurement comprises a substrate, a first optical waveguide layer formed on a surface of the substrate, an entrance grating and an exit grating which are formed contacting with the first optical waveguide layer and being spaced from each other, a second optical waveguide layer located between the entrance grating and the exit grating while being in contact with the first optical waveguide layer, the second optical waveguide layer having a higher refractive index that that of the first optical waveguide layer, and a functioning layer containing an enzyme and a coloring reagent which is formed on the second optical waveguide layer.
    Type: Application
    Filed: November 22, 2002
    Publication date: December 4, 2003
    Inventors: Kenichi Uchiyama, Ichiro Tono, Hideo Eto, Miki Nagatomo