Patents by Inventor Koitchiro Ryuno

Koitchiro Ryuno 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 preservation of nitrile hydration activity
    Patent number: 4931391
    Abstract: Nitrile hydration activity of the nitrilase or the immobilized from thereof can be stably preserved by adding as a stabilizer at least one compound selected from nitriles, amides, and organic acids and salts thereof to a solution or suspension of the nitrilase or of the immobilized form thereof.
    Type: Grant
    Filed: May 1, 1987
    Date of Patent: June 5, 1990
    Assignees: Mitsubishi Rayon Kabushiki Kaisha, Nitto Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kanehiko Enomoto, Koitchiro Ryuno, Hitoshi Shimizu
  • Method for preservation of nitrile hydration activity
    Patent number: 4900672
    Abstract: Nitrile hydration activity of nitrile hydratase produced by a microorganism of the genus Pseudomonas or Pseudomonas microorganism cells per se or in the immobilized state, all having nitrile hydration activity can be stably preserved by adding as a stabilizer at least one compound selected from nitriles, amides, and organic acids and salts thereof to a suspension or solution of the nitrile hydratase, or the microorganism cells per se or in the immobilized state.
    Type: Grant
    Filed: May 1, 1987
    Date of Patent: February 13, 1990
    Assignee: Nitto Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hideaki Yamada, Kanehiko Enomoto, Koitchiro Ryuno, Hitoshi Shimizu
  • Method for cultivation of pseudomonas bacteria
    Patent number: 4661456
    Abstract: Cells of Pseudomonas bacteria having a high nitrile hydratase activity can be obtained in a high yield by adding to a culture medium at least one .alpha.-amino acid, except for cysteine or cystine alone and a combination of these .alpha.-amino acids alone, in the preparation of cells of bacteria having nitrile hydratase activity by cultivating under nitrile hydratase-inducing conditions Pseudomonas bacteria capable of producing nitrile hydratase.
    Type: Grant
    Filed: January 9, 1984
    Date of Patent: April 28, 1987
    Assignees: Nitto Kagaku Kogyo Kabushiki Kaisha, Hideaki Yamada
    Inventors: Hideaki Yamada, Koitchiro Ryuno, Kanehiko Enomoto, Ichiro Watanabe
  • Method for cultivation of Pseudomonas bacteria
    Patent number: 4555487
    Abstract: Cells of Pseudomonas bacteria having a high nitrile hydratase activity can be obtained in a high yield by adding to a culture medium at least one amide compound selected from the group consisting of acrylamide, methacrylamide, crotonamide, and n-butyramide in the preparation of cells of bacteria having nitrile hydratase activity by cultivating Pseudomonas bacteria capable of producing nitrile hydratase.
    Type: Grant
    Filed: November 15, 1983
    Date of Patent: November 26, 1985
    Assignees: Nitto Kagaku Kogyo Kabushiki Kaisha, Hideaki Yamada
    Inventors: Hideaki Yamada, Koitchiro Ryuno