Patents by Inventor Yoshimi Nagano

Yoshimi Nagano 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 purification of amino acids, nucleic acids using a hydrocyclone
    Patent number: 5547858
    Abstract: Crystals of an amino acid, a nucleic acid or a derivative thereof can be efficiently isolated and purified at low cost from a solution containing the crystals, bacterial cells and medium components by using a liquid cyclone.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: August 20, 1996
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yoshimi Nagano, Takao Suganuma, Kazuhiro Satoh, Masao Ikeda
  • Feed additive containing tryptophan
    Patent number: 4778808
    Abstract: A feed additive produced by concentrating an aqueous solution containing tryptophan and impurities both originating in the culture broth of a tryptophan-producing microorganism, with the pH of the aqueous solution being maintained in the range of 4 to 6 and the temperature thereof being maintained in the range of 20.degree. to 80.degree. C. during the process of concentrating.
    Type: Grant
    Filed: March 12, 1986
    Date of Patent: October 18, 1988
    Assignee: Ajinomoto Co., Inc.
    Inventors: Chiaki Sano, Yoshimi Nagano, Kiyoshi Tanaka, Shigeho Ikeda, Masayoshi Naruse
  • Process for the production of a composition for animal feed
    Patent number: 4777051
    Abstract: A process for production of a composition for animal feed, which comprisesspray drying a solution containing 5-95 wt. % based on the solids content of a solution of tryptophan or threonine, or a concentrate thereof, to make sprayed granules in a semi-dry state,depositing said spray granules in a mat form, andhot air drying said granules to produce granules having a water content of about 4 wt. % or less.
    Type: Grant
    Filed: April 24, 1987
    Date of Patent: October 11, 1988
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yoshimi Nagano, Hiroshi Fukushi, Takafumi Tosa, Masayoshi Naruse, Shigeho Ikeda