Patents by Inventor Pinghai Ding

Pinghai Ding 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).

  • Portable meter to measure chlorophyll, nitrogen and water and methods
    Patent number: 7746452
    Abstract: Methods for determining chlorophyll content comprise providing a sample, subjecting the sample to light at a first wavelength and detecting a first wavelength response, subjecting the sample to light at a second wavelength and detecting a second wavelength response, and calculating a chlorophyll content of the sample based on at least the first wavelength response and the second wavelength response. Optional approaches include detecting the nitrogen content and/or water content of the sample. Associated apparatus for determining chlorophyll content, which may comprise a handheld device, is also disclosed.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: June 29, 2010
    Assignee: State of Oregon acting by and through the State Board of Higher Education on behalf of Oregon State University
    Inventors: Leslie H. Fuchigami, Pinghai Ding, Guy E. Barnes, Jr.
  • Portable Meter to Measure Chlorophyll, Nitrogen and Water and Methods
    Publication number: 20080239293
    Abstract: Methods for determining chlorophyll content comprise providing a sample, subjecting the sample to light at a first wavelength and detecting a first wavelength response, subjecting the sample to light at a second wavelength and detecting a second wavelength response, and calculating a chlorophyll content of the sample based on at least the first wavelength response and the second wavelength response. Optional approaches include detecting the nitrogen content and/or water content of the sample. Associated apparatus for determining chlorophyll content, which may comprise a handheld device, is also disclosed.
    Type: Application
    Filed: November 21, 2006
    Publication date: October 2, 2008
    Inventors: Leslie H. Fuchigami, Pinghai Ding, Guy E. Barnes Jr