MK

Masuo Kubota

KC Kotobuki & Co.: 3 patents #24 of 77Top 35%
📍 Kawagoe, JP: #502 of 1,278 inventorsTop 40%
Overall (All Time): #1,665,863 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5074694 Latch mechanism for retractable writing instruments Youichi Nakazato, Shubei Kageyama, Yoshihide Mitsuya 1991-12-24
5056947 Dual refill-type writing utensil Hidehei Kageyama, Saburo Kobayashi, Yoshihide Mitsuya, Tadayoshi Ebinuma 1991-10-15
4973179 Clip actuated latch mechanism for retractable writing instruments Youichi Nakazato, Shuhei Kageyama, Yoshihide Mitsuya 1990-11-27