Patents by Inventor Jun KANADA

Jun KANADA 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).

  • Product 1,3-butylene glycol
    Patent number: 11952329
    Abstract: A product 1,3-butylene glycol, wherein, in an HPLC analysis under specific conditions after specific sample preparation, when a relative retention time of 2,4-dinitrophenylhydrazine is regarded as 1.0, a sum area value of absorbance peaks that appear within a relative retention time range of 4.4 to 12.0 is 1000 or less, and wherein a dinitrophenylhydrazine derivative of a carbonyl compound having 4 to 6 carbon atoms is contained as a component that corresponds to the peaks that appear within the relative retention time range of 4.4 to 12.0.
    Type: Grant
    Filed: June 2, 2022
    Date of Patent: April 9, 2024
    Assignee: KH NEOCHEM CO., LTD.
    Inventors: Hirotaka Tanaka, Takashi Hakumura, Jun Kanada
  • Product 1,3-Butylene Glycol
    Publication number: 20240083830
    Abstract: A product 1,3-butylene glycol, wherein, in an HPLC analysis under specific conditions after specific sample preparation, when a relative retention time of 2,4-dinitrophenylhydrazine is regarded as 1.0, a sum area value of absorbance peaks that appear within a relative retention time range of 4.4 to 12.0 is 1000 or less, and wherein a dinitrophenylhydrazine derivative of a carbonyl compound having 4 to 6 carbon atoms is contained as a component that corresponds to the peaks that appear within the relative retention time range of 4.4 to 12.0.
    Type: Application
    Filed: June 2, 2022
    Publication date: March 14, 2024
    Applicant: KH Neochem Co., Ltd.
    Inventors: Hirotaka TANAKA, Takashi HAKUMURA, Jun KANADA
  • PRODUCT 1,3-BUTYLENE GLYCOL
    Publication number: 20230227389
    Abstract: A product 1,3-butylene glycol, in which 2,4-dinitrophenylhydrazine derivatives of 2-(hydroxyethyl)-2,6-dimethyl-1,3-dioxane have a weight proportion of 90 ppm or less, as calculated from a sum of absorbance of peaks thereof in an HPLC analysis under specific conditions after specific sample preparation.
    Type: Application
    Filed: May 18, 2022
    Publication date: July 20, 2023
    Applicant: KH Neochem Co., Ltd.
    Inventors: Akihiro SUGURI, Tomohiro IWASA, Takashi HAKUMURA, Jun KANADA