Patents by Inventor Yoshiharu Yokoo

Yoshiharu Yokoo 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).

  • Polypeptide derivatives of human granulocyte colony stimulating factor
    Patent number: 5214132
    Abstract: Novel hG-CSF polypeptide derivatives having an amino acid sequence derived from the amino acid sequence of the human granulocyte colony stimulating factor polypeptide by substitution of at least one amino acid by a different amino acid and/or deletion of at least one amino acid, recombinant plasmids containing a DNA fragment insert coding for any of these hG-CSF polypeptide derivatives, microorganisms carrying one of such plasmids, methods of producing the hG-CSF polypeptide derivatives using the microorganisms, a monoclonal antibody binding to the hG-CSF polypeptide derivative, and chemically modified hG-CSF or derivatives thereof are disclosed.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: May 25, 1993
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tetsuro Kuga, Hiromasa Miyaji, Moriyuki Sato, Masami Okabe, Makoto Morimoto, Seiga Itoh, Motoo Yamasaki, Yoshiharu Yokoo, Kazuo Yamaguchi, Hajime Yoshida, Yoshinori Komatsu
  • Process for renaturing fish growth hormone
    Patent number: 4985544
    Abstract: Reactivation of cysteine-containing protein in a process, in which a reduced and denatured cysteine-containing protein such as salmon growth hormone I or eel growth hormone I can be efficiently reactivated.
    Type: Grant
    Filed: August 2, 1988
    Date of Patent: January 15, 1991
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Yoshiharu Yokoo, Seiji Sugimoto
  • Hair preparation composition
    Patent number: 4961925
    Abstract: The present invention provides a hair preparation composition which contains, as an active ingredient, a dielectron reducing oxidase utilizing oxygen as an acceptor.
    Type: Grant
    Filed: November 29, 1988
    Date of Patent: October 9, 1990
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Yoshio Tsujino, Yoshiharu Yokoo, Kuniaki Sakato, Hiroshi Hagino