Patents by Inventor Akihisa Yahashi

Akihisa Yahashi 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).

  • Method for analysis of compounds with amino group and analytical reagent therefor
    Patent number: 9658234
    Abstract: The present invention provides a method for the analysis of a compound with amino group (e.g., an amino acid or peptide) contained in a sample and convenient manner with a high sensitivity. The compound with amino group in a sample containing the compound with amino group is labeled with a specific carbamate compound such as p-trimethylammonium anilyl-N-hydroxysuccinimidyl carbamate iodide to enhance the selectivity and sensitivity. The present invention is preferably used in conjunction with mass spectrometry such as MS/MS method to facilitate quantitative analysis. The present invention further provides labeling reagents for mass spectrometry.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: May 23, 2017
    Assignee: AJINOMOTO CO., INC.
    Inventors: Hiroshi Miyano, Akihisa Yahashi, Kazutaka Shimbo, Masakazu Nakazawa, Kazuo Hirayama
  • METHOD FOR ANALYSIS OF COMPOUNDS WITH AMINO GROUP AND ANALYTICAL REAGENT THEREFOR
    Publication number: 20160139134
    Abstract: The present invention provides a method for the analysis of a compound with amino group (e.g., an amino acid or peptide) contained in a sample and convenient manner with a high sensitivity. The compound with amino group in a sample containing the compound with amino group is labeled with a specific carbamate compound such as p-trimethylammonium anilyl-N-hydroxysuccinimidyl carbamate iodide to enhance the selectivity and sensitivity. The present invention is preferably used in conjunction with mass spectrometry such as MS/MS method to facilitate quantitative analysis. The present invention further provides labeling reagents for mass spectrometry.
    Type: Application
    Filed: January 21, 2016
    Publication date: May 19, 2016
    Applicant: AJINOMOTO CO., INC.
    Inventors: Hiroshi MIYANO, Akihisa YAHASHI, Kazutaka SHIMBO, Masakazu NAKAZAWA, Kazuo HIRAYAMA
  • Method for analysis of compounds with amino group and analytical reagent therefor
    Patent number: 9274123
    Abstract: The present invention provides a method for the analysis of a compound with amino group (e.g., an amino acid or peptide) contained in a sample and convenient manner with a high sensitivity. The compound with amino group in a sample containing the compound with amino group is labeled with a specific carbamate compound such as p-trimethylammonium anilyl-N-hydroxysuccinimidyl carbamate iodide to enhance the selectivity and sensitivity. The present invention is preferably used in conjunction with mass spectrometry such as MS/MS method to facilitate quantitative analysis. The present invention further provides labeling reagents for mass spectrometry.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: March 1, 2016
    Assignee: AJINOMOTO CO., INC.
    Inventors: Hiroshi Miyano, Akihisa Yahashi, Kazutaka Shimbo, Masakazu Nakazawa, Kazuo Hirayama
  • Method for analysis of compounds with amino group and analytical reagent therefor
    Publication number: 20060286673
    Abstract: The present invention provides a method for the analysis of a compound with amino group (e.g., an amino acid or peptide) contained in a sample and convenient manner with a high sensitivity. The compound with amino group in a sample containing the compound with amino group is labeled with a specific carbamate compound such as p-trimethylammonium anilyl-N-hydroxysuccinimidyl carbamate iodide to enhance the selectivity and sensitivity. The present invention is preferably used in conjunction with mass spectrometry such as MS/MS method to facilitate quantitative analysis. The present invention further provides labeling reagents for mass spectrometry.
    Type: Application
    Filed: September 1, 2006
    Publication date: December 21, 2006
    Applicant: AJINOMOTO CO. INC
    Inventors: Hiroshi Miyano, Akihisa Yahashi, Kazutaka Shimbo, Masakazu Nakazawa, Kazuo Hirayama
  • Method for analysis of compounds with amino group and analytical reagent therefor
    Patent number: 7148069
    Abstract: The present invention provides a method for the analysis of a compound with amino group (e.g., an amino acid or peptide) contained in a sample and convenient manner with a high sensitivity. The compound with amino group in a sample containing the compound with amino group is labeled with a specific carbamate compound such as p-trimethylammonium anilyl-N-hydroxysuccinimidyl carbamate iodide to enhance the selectivity and sensitivity. The present invention is preferably used in conjunction with mass spectrometry such as MS/MS method to facilitate quantitative analysis. The present invention further provides labeling reagents for mass spectrometry.
    Type: Grant
    Filed: August 16, 2004
    Date of Patent: December 12, 2006
    Assignee: Ajinomoto Co., Inc.
    Inventors: Hiroshi Miyano, Akihisa Yahashi, Kazutaka Shimbo, Masakazu Nakazawa, Kazuo Hirayama
  • Method for analysis of compounds with amino group and analytical reagent therefor
    Publication number: 20050079624
    Abstract: The present invention provides a method for the analysis of a compound with amino group (e.g., an amino acid or peptide) contained in a sample and convenient manner with a high sensitivity. The compound with amino group in a sample containing the compound with amino group is labeled with a specific carbamate compound such as p-trimethylammonium anilyl-N-hydroxysuccinimidyl carbamate iodide to enhance the selectivity and sensitivity. The present invention is preferably used in conjunction with mass spectrometry such as MS/MS method to facilitate quantitative analysis. The present invention further provides labeling reagents for mass spectrometry.
    Type: Application
    Filed: August 16, 2004
    Publication date: April 14, 2005
    Applicant: AJINOMOTO CO., INC
    Inventors: Hiroshi Miyano, Akihisa Yahashi, Kazutaka Shimbo, Masakazu Nakazawa, Kazuo Hirayama