Patents by Inventor Katsuo Asakura

Katsuo Asakura 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).

  • NMR Measurement Apparatus, and Method of Identifying Solvent
    Publication number: 20230050786
    Abstract: An NMR spectrum is acquired from a nucleus of interest in a solvent included in a sample solution. A spectrum analyzer analyzes a number of splits, a splitting interval, a number of signals, and a signal interval based on the NMR spectrum. Based on these characteristic quantities, an identifier identifies the solvent. In another configuration, a plurality of NMR spectra acquired from a plurality of nuclei of interest included in the solvent may be analyzed.
    Type: Application
    Filed: August 10, 2022
    Publication date: February 16, 2023
    Inventors: Hiroaki Sasakawa, Katsuo Asakura, Kenya Izumi
  • Method of optimizing NMR measurement condition
    Patent number: 7023208
    Abstract: There is disclosed a method of finding a reliable optimum value of a measurement condition in an NMR measurement. This method starts with gaining NMR measurement data while varying the value of the measurement condition to be optimized. Then, a certain property is extracted as a numerical value from the measurement data. A plot is made of the measurement data versus the value of the measurement condition to create a curve. A model equation coincident with the measurement condition, its range, and the certain property extracted as a numerical value is established. Curve fitting is done in which constants of the model equation are varied such that the equation agrees the created curve. The constant values of the model equation and their standard deviation are obtained by curve fitting. An optimum value of the measurement condition is obtained from the results.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: April 4, 2006
    Assignee: JEOL Ltd.
    Inventors: Tomomitsu Kurimoto, Nobuaki Nemoto, Katsuo Asakura, Chiharu Yamasaki
  • Method of optimizing NMR measurement condition
    Publication number: 20040263164
    Abstract: There is disclosed a method of finding a reliable optimum value of a measurement condition in an NMR measurement. This method starts with gaining NMR measurement data while varying the value of the measurement condition to be optimized. Then, a certain property is extracted as a numerical value from the measurement data. A plot is made of the measurement data versus the value of the measurement condition to create a curve. A model equation coincident with the measurement condition, its range, and the certain property extracted as a numerical value is established. Curve fitting is done in which constants of the model equation are varied such that the equation agrees the created curve. The constant values of the model equation and their standard deviation are obtained by curve fitting. An optimum value of the measurement condition is obtained from the results.
    Type: Application
    Filed: April 28, 2004
    Publication date: December 30, 2004
    Applicant: JEOL Ltd.
    Inventors: Tomomitsu Kurimoto, Nobuaki Nemoto, Katsuo Asakura, Chiharu Yamasaki