Inventor

OSANO YOSHITOSHI

JP4 patents

⚠️ This page may combine multiple inventors who share the name “OSANO YOSHITOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MITSUBISHI PENCIL CO

2 patents

US7654763B2Feb 2, 2010

Mechanical pencil

MITSUBISHI PENCIL CO10 citations82

US7815385B2Oct 19, 2010

Mechanical pencil

MITSUBISHI PENCIL CO7 citations71

OHSAWA NORIO

1 patent

US8337107B2Dec 25, 2012

Mechanical pencil

OHSAWA NORIO8 citations77

IZAWA HIROTAKE

1 patent

US8328446B2Dec 11, 2012

Mechanical pencil

IZAWA HIROTAKE2 citations57