Patents by Inventor Seiga Itoh

Seiga Itoh 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).

  • Derivative of adult T cell leukemia virus antigen peptide
    Patent number: 4795805
    Abstract: Recombinant plasmids are constructed by inserting a DNA fragment coding for a fused protein of an adult T cell leukemia virus antigen peptide and an enzyme into a vector DNA. Microorganisms are transformed with the recombinant plasmid and thereafter cultured to express the fused protein. The fused protein is useful for the detection and diagnosis of adult T cell leukemia.
    Type: Grant
    Filed: October 2, 1987
    Date of Patent: January 3, 1989
    Assignees: Kyowa Hakko Kogyo Co., Ltd., Juridical Foundation, Japanese Foundation for Cancer Research
    Inventors: Seiga Itoh, Susumu Sekine, Tadatsugu Taniguchi, Mitsuaki Yoshida, Haruo Sugano
  • Novel human interferon-gamma polypeptide derivative
    Patent number: 4758656
    Abstract: Disclosed is a novel derivative of human interferon-.gamma. polypeptide, a recombinant plasmid wherein a DNA fragment coding for said polypeptide is incorporated and a process for producing the derivative of human interferon-.gamma. polypeptide using a microorganism containing said plasmid.
    Type: Grant
    Filed: December 19, 1984
    Date of Patent: July 19, 1988
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Seiga Itoh, Susumu Sekine, Akiko Saito, Moriyuki Sato
  • Fish growth hormone polypeptide
    Patent number: 4689402
    Abstract: According to the present invention, a recombinant DNA incorporated with a DNA coding for a fish growth hormone polypeptide and a microorganism containing the recombinant DNA were obtained and they can be used for mass production of the fish growth hormone polypeptide.
    Type: Grant
    Filed: July 1, 1985
    Date of Patent: August 25, 1987
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Susumu Sekine, Tamio Mizukami, Moriyuki Sato, Seiga Itoh, Akiko Saito
  • Recombinant plasmid containing human interferon-beta gene
    Patent number: 4686191
    Abstract: Recombinant vector plasmids containing a DNA fragment coding for human interferon-.beta. inserted downstream from a tryptophan promoter are useful for transformation of microorganisms such as Escherichia coli which transformants produce human interferon-.beta..
    Type: Grant
    Filed: December 22, 1982
    Date of Patent: August 11, 1987
    Assignees: Hakko Kogyo Co., Ltd. Kyowa, Juridical Foundation, Japanese Foundation for Cancer Research
    Inventors: Seiga Itoh, Tatsunari Nishi, Tamio Mizukami, Tadashi Matsumoto, Tetsuo Oka, Tadatsugu Taniguchi, Haruo Sugano