SI

Syuji Ichikawa

ML Mitsubishi Pencil Company, Limited: 2 patents #127 of 302Top 45%
Overall (All Time): #2,079,914 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
8562235 Ink composition for aqueous ink ball point pen and aqueous ink ball point pen Hideaki Toomi, Masanao Yano, Takeshi Hayakawa 2013-10-22
6945726 Refill for oil-based ink ballpoint pen and oil-based ink ballpoint pen Takayuki Ikai, Miyuki Shouji, Daisen Katou, Takeshi Kobayashi 2005-09-20