IN

Ichiro Nishitani

KC Kuretake Co.: 9 patents #1 of 23Top 5%
Overall (All Time): #553,432 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
11752796 Tail plug and writing instrument Makiko Morimoto 2023-09-12
11472220 Pen and pen refill Makiko Morimoto 2022-10-18
10081216 Ink filling tool Akina Niwa 2018-09-25
6817802 Writing instrument Akira Matsuda, Masatoshi Yashima 2004-11-16
6807704 Brush flatter and drawing instrument equipped with brush flatter 2004-10-26
D472925 Writing instrument Akira Matsuda, Masatoshi Yashima 2003-04-08
D472926 Writing instrument Akira Matsuda, Masatoshi Yashima 2003-04-08
6536969 Writing tool equipped with ink reservoir 2003-03-25
6439793 Stippling instrument Akira Matsuda, Munetoshi Koshihara, Masatoshi Yashima 2002-08-27