Patents by Inventor Takafumi Tosa

Takafumi Tosa 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 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
  • Method for separating a basic amino acid
    Patent number: 4691054
    Abstract: A method for separating a basic amino acid from a liquor containing the same, which entails (a) contacting the basic amino containing liquor with a strongly acidic cation exchange resin at a pH at which the basic amino acid exists in the form of a divalent cation, thereby adsorbing at least a part of the basic amino acid in the form of the divalent cation; (b) contacting said ion exchange resin with a liquor containing said basic amino acid and a neutral amino acid or an acidic amino acid at a pH at which the basic amino acid exists in the form of a monovalent cation; (c) passing an eluant through said ion exchange resin, thereby eluting the basic amino acid from the ion exchange resin; and (d) separating and recovering the basic amino acid from the eluate.
    Type: Grant
    Filed: September 9, 1986
    Date of Patent: September 1, 1987
    Assignee: Ajinomoto Co., Inc.
    Inventors: Takafumi Tosa, Yoshihiro Koga, Tsutomu Matsuishi