Patents by Inventor Satoshi Kumon

Satoshi Kumon 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).

  • Process for producing 5-methyluridine and purification by sedimentation velocity
    Patent number: 5547857
    Abstract: The present provides a process for obtaining high-purity 5-methyluridine crystals from nucleic acid ingredients as starting materials using a microorganism. The process comprises culturing a microorganism, removing part or the whole of the culture medium ingredients, conducting the enzyme reaction by the microorganism, crystallizing 5-methyluridine formed, and separating the obtained crystals from other impurity crystals on the basis of a difference in the precipitation rate.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: August 20, 1996
    Assignee: Ajinomoto Co., Inc.
    Inventors: Shogo Maruyama, Satoshi Kumon
  • Method for recovery of .alpha.-L-aspartyl-L-phenylalanine methyl ester, L-phenylalanine and L-aspartic acid
    Patent number: 5304671
    Abstract: A method for the recovery of .alpha.-L-aspartyl-L-phenylalanine methyl ester, L-phenylalanine and L-aspartic acid from the mother liquor obtained by the solid-liquid separation of a suspension of .alpha.-L-aspartyl-L-phenylalanine methyl ester crystals is disclosed.
    Type: Grant
    Filed: August 5, 1992
    Date of Patent: April 19, 1994
    Assignee: Ajinomoto Co., Inc.
    Inventors: Sou Abe, Shinichi Kishimoto, Tadashi Takemoto, Toshihisa Kato, Satoshi Kumon
  • Method of crystallizing aspartame
    Patent number: 5298648
    Abstract: Aspartame, crystallized in the presence of a crystal growth inhibitor comprising one or more of dipeptides, amino acids, saccharides, organic acids and inorganic salts, has a thick and firm crystal habit. The crystals may be easily separated by solid-liquid separation, and the drying load of them is low. After being dried, the dried aspartame powder may be handled with ease and it has excellent powdery characteristics.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: March 29, 1994
    Assignee: Ajinomoto Co., Inc.
    Inventors: Kazuyoshi Ebisawa, Rie Kawaoka, Nobuya Nagashima, Satoshi Kumon