Patents by Inventor Henry G. Wada

Henry G. Wada 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).

  • METHODS FOR MIXING FLUIDS IN MICROFLUIDIC DEVICES, AND DEVICES AND SYSTEMS THEREFOR
    Publication number: 20190314777
    Abstract: Microfluidic devices, systems, and methods for mixing a solution are disclosed, comprising a microfluidic device (100) having a first chamber (110) connected via a connection channel to a second chamber (116) that in operation is only in fluidic communication with the first chamber of the device (100). In the method, solution in the first chamber (110) is forced into the second chamber (116), compressing the air trapped within the second chamber (116), and then that solution is returned to the first chamber (110). On return to the first chamber (110), the solution exits the connecting channel (115) and causes mixing in the first chamber (110).
    Type: Application
    Filed: August 31, 2017
    Publication date: October 17, 2019
    Inventors: Zhi Li, Yu Liu, Henry G. Wada, Daisuke Eto, Chen Li, Kazuhisa Kobayashi, Warren Wu
  • Method and System for Internal Standardization of Assays
    Publication number: 20100117666
    Abstract: Internal standard concentration is normalized as an independent parameter through measuring a buffer conductance in a system with characterized reagents and in a defined assay device. The conductivity of a fresh internal standard solution is measured whether in isolation or as part of a system that is subject to a uniform variation such as evaporation or condensation. Collected conductance measurements may be used to normalize assay signals that are dependent upon fluidic channel dimensions, such as fluorescence assay signal measurement.
    Type: Application
    Filed: December 27, 2007
    Publication date: May 13, 2010
    Inventors: Henry G. Wada, Tomohisa Kawabata, Luc Bousse
  • Polyredox couples in analyte determinations
    Patent number: 5501956
    Abstract: Enzyme or substrate determinations can be achieved by employing an organic second substrate, which produces a product which may be coupled with a metal inorganic redox couple capable of interacting with and affecting the potential of a metal electrode on a semiconductor surface. Particularly, hydrogen peroxide or indoxyl phosphate are coupled with iron- or ruthenium-containing ionic redox couples for determination with a noble metal electrode.
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: March 26, 1996
    Assignee: Molecular Devices Corporation
    Inventors: Henry G. Wada, Harden M. McConnell, Dean G. Hafeman
  • Polyredox couples in analyte determinations
    Patent number: 4942127
    Abstract: Enzyme or substrate determinations can be achieved by employing an organic second substrate, which produces a product which may be coupled with a metal inorganic redox couple capable of interacting with and affecting the potential of a metal electrode on a semiconductor surface. Particularly, hydrogen peroxide or indoxyl phosphate are coupled with iron- or ruthenium-containing ionic redox couples for determination with a noble metal electrode.
    Type: Grant
    Filed: May 6, 1988
    Date of Patent: July 17, 1990
    Assignee: Molecular Devices Corporation
    Inventors: Henry G. Wada, Harden McConnell, Dean G. Hafeman