Patents by Inventor Toshimasa Nakayama

Toshimasa Nakayama 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 determining enzyme activity
    Patent number: 4017365
    Abstract: Difficulty in using the Karmen method due to lipemic turbidity and substances absorbing ultraviolet rays in serum can be prevented by reducing the amount of GOT or GPT-containing sample and adding nonion surfactant to the reaction system.
    Type: Grant
    Filed: October 7, 1974
    Date of Patent: April 12, 1977
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Toshimasa Nakayama, Motoshi Kitamura