P

Inventor

SUMIYOSHI SATORU

JP5 patents
⚠️ This page may combine multiple inventors who share the name “SUMIYOSHI SATORU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MITSUBISHI PENCIL CO

3 patents

TSURUKAWA NAOKI

1 patent

FUKUMOTO TAKEO

1 patent