In the late Edo period, was founded Yoshiyo Knife company where Tetsuo Kiryu became a disciple. Then he founded independently as Kiryu Seisakusho Company with the brand name of Tetsuhiro(Tetsuhiro Knives) in 1945.
Initially, it was a blacksmith who specialized in deba and sashimi knives, eventually worked on hatchets, etc. This company was known as a luxury brand in the local area, and was able to mass-produce with many disciples.
When stainless steel knives came in from Europe after the war, Mr. Tetsuo, who was enthusiastic about research and liked new things, put the production of stainless steel knives on track due to trial and error.
As a result, he closed the blacksmith and made replaced many of the spring hammers and blacksmithing equipment he owned at the time with mass-produced machines such as presses.
Kiryu Seisakusho Company succeed in mass production of stainless steel knives for the first time in the Niigata production area of Japan.