昭和3年 実用新案登録証 2-56

白樺製の機械生産した平ようじは折れやすいので日本人向きなので、丸いようじを作るべきだと考えてその製法を登録した。

The founder of our company,Y .Inaba bought the machinary for flat toothpick.

But flat one is unfamiliar and weak for Japanese .So he thought to produce round one.

He applyed the patent to make a round toothpick by machinery in 1928 first in JApan.