05

History

Historical Timeline of Our Products

The Trajectory of NGK Product Advancement

1919-1958

1919
  • NGK INSULATORS, LTD. is established.
1923
  • Production of bushings begins.
1929
  • Completed construction of 1,000 kV-class insulator testing facilities.
1930
  • Production of the “NG Spark Plug” begins.
    Notes:
  • Renamed the “NGK Spark Plug” in 1934.
  • Production transferred in accordance with the spin-off of NGK Spark Plug Co., Ltd. in 1936.
  • Research on permeable substrates begins.
1931
  • First deliveries of acid proof pumps are made.
  • Production of acid proof cement begins.
1932
  • Sale of NGK laboratory porcelain ware begins.
1934
  • First deliveries of ceramic diffusers are made.
1938
  • Production of titanium porcelain is developed.
1943
  • Production of short-wave insulators begins.
1953
  • Production of solid-core station post insulators begins.
1954
  • Silicon carbide firing kiln shelves and supports are developed.
1955
  • Research on Beryllium begins.
1958
  • Production of beryllium-copper master alloy begins.

Note:

  • Products marked with a dot () are no longer manufactured or sold (including those transferred to another group company).
  • 1,000 kV-class insulator testing facilities
  • NG Spark Plug
  • Ceramic acid proof pump
  • Ceramic diffuser
  • Short-wave insulator
  • Solid-core station post insulator
  • Beryllium-copper master alloy