P

Inventor

UMEKAWA HIDEKI

JP3 patents
⚠️ This page may combine multiple inventors who share the name “UMEKAWA HIDEKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SUN TOX CO LTD

1 patent

TOKUYAMA CORP

1 patent

UMEKAWA HIDEKI

1 patent