Patents Assigned to Takashi Kawai
  • Method of controlling cockroaches
    Patent number: 4337592
    Abstract: A method of controlling cockroaches by irradiation thereof using ultraviolet rays.
    Type: Grant
    Filed: March 23, 1981
    Date of Patent: July 6, 1982
    Assignee: Takashi Kawai
    Inventor: Tokuichiro Hasegawa