May 1966
Started manufacturing and selling textile machines and metal molds in Toyokawa City, Aichi Prefecture in Japan.

December 1968
Natsume Manufacture Ltd. was established with a capital of 600,000 yen. Started manufacturing resistance-welding electrodes.

November 1977
Capital was increased to 3 million yen.

July 1985
The Business Management Center was established in Toyokawa City.

February 1986
Capital was increased to 7 million yen.

November 1989
A new building was built in Toyohashi City to consolidate all business functions.

February 1990
The company name was changed to Natsume Inc.

August 1990
Capital was increased to 35 million yen.

September 1992
Capital was increased to 49 million yen.

February 1997
The material factory was expanded.

August 2003
A turnery install more.

August 2006
Expansion of precision micro-lathing factory.