P

Inventor

OYAMA KOICHI

JP21 patents
⚠️ This page may combine multiple inventors who share the name “OYAMA KOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DENSO CORP

11 patents

RISO KAGAKU CORP

4 patents

SONY CORP

3 patents

GRAPHIC COMMUNICATION TECH LTD

1 patent

NEC CORP

1 patent

MIYAKOSHI PRINTING MACHINERY CO LTD

1 patent