Patents by Inventor Taikichi Kondo

Taikichi Kondo 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).

  • Electrical measuring device
    Patent number: 5012182
    Abstract: The disclosed porcelain insulator has built-in optical transmission media extending therethrough from a base metal secured at one end thereof to a conductor-holding fixture at the opposite end thereof. The conductor-holding fixture may carry one or both of two type sensing units: namely, a sensing unit having a current transformer (CT) coupled to the phase conductor, a load resistor connected to the CT, and an electro-optic element coupled to both said load resistor and said optical transmission medium; and another sensing unit having a capacitive potential transformer (PT) coupled to said conductor and an electro-optic element coupled to both said PT and said optical transmission medium.
    Type: Grant
    Filed: October 18, 1989
    Date of Patent: April 30, 1991
    Assignee: NGK Insulators, Ltd.
    Inventors: Toshisada Fujiki, Taikichi Kondo, Yoshinari Furukawa, Kazuaki Kato, Akimichi Okimoto, Kenji Tsuge
  • Electrical measuring device
    Patent number: 4894609
    Abstract: The disclosed porcelain insulator has built-in optical transmission media extending therethrough from a base metal secured at one end thereof to a conductor-holding fixture at the opposite end thereof. The conductor-holding fixture may carry one or both of two type sensing units: namely, a sensing unit having a current transformer (CT) coupled to the phase conductor, a load resistor connected to the CT, and an electro-optic element coupled to both said load resistor and said optical transmission medium; and another sensing unit having a capacitive potential transformer (PT) coupled to said conductor and an electro-optic element coupled to both said PT and said optical transmission medium.
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: January 16, 1990
    Assignee: NGK Insulators, Ltd.
    Inventors: Toshisada Fujiki, Taikichi Kondo, Yoshinari Furukawa, Kazuaki Kato, Akimichi Okimoto, Kenji Tsuge