Shinkichi Katayama

PK Pentel Kabushiki Kaisha: 1 patents #76 of 170Top 45%

📍 Ibaraki, JP: #4,343 of 6,779 inventorsTop 65%

Overall (All Time): #3,808,636 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
D351416	Ball point pen	Shigeo Oka	1994-10-11