Patents by Inventor Tetsuji Okazaki

Tetsuji Okazaki 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).

  • Sperm diluent solution and method for artificial insemination using same
    Patent number: 9439414
    Abstract: A sperm diluent of the present invention contains a chelating agent such as EDTA and/or, EGTA, which forms a complex with a calcium ion, in a base diluent. Further, the sperm diluent contains an immunosuppressive factor such as a steroid hormone and/or, a cytokine, which suppresses migration of leukocytes. By diluting frozen sperm with this sperm diluent followed by performing artificial insemination, death of the sperm before fertilization and phagocytosis of the sperm and embryos by leukocytes in the uterus can be suppressed, allowing enhancement of the conception rate and the implantation rate.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: September 13, 2016
    Assignee: HIROSHIMA UNIVERSITY
    Inventors: Masayuki Shimada, Tetsuji Okazaki
  • Sperm Diluent Solution and Method for Artificial Insemination Using Same
    Publication number: 20120197068
    Abstract: A sperm diluent of the present invention contains a chelating agent such as EDTA and/or, EGTA, which forms a complex with a calcium ion, in a base diluent. Further, the sperm diluent contains an immunosuppressive factor such as a steroid hormone and/or, a cytokine, which suppresses migration of leukocytes. By diluting frozen sperm with this sperm diluent followed by performing artificial insemination, death of the sperm before fertilization and phagocytosis of the sperm and embryos by leukocytes in the uterus can be suppressed, allowing enhancement of the conception rate and the implantation rate.
    Type: Application
    Filed: June 17, 2010
    Publication date: August 2, 2012
    Inventors: Masayuki Shimada, Tetsuji Okazaki