YS

Yasuhiro Sanpei

MC Micro Co.: 2 patents #8 of 31Top 30%
Overall (All Time): #2,156,790 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7237972 Automatic mechanical pencil and method of assembly thereof Hiroyuki Kanari 2007-07-03
7207738 Writing instrument Hiroyuki Kanari 2007-04-24