P

Inventor

YAMAMOTO YOJIRO

JP7 patents
⚠️ This page may combine multiple inventors who share the name “YAMAMOTO YOJIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SHELL OIL CO

3 patents

COSMO OIL CO LTD

1 patent

MITSUBISHI PETROCHEMICAL CO

1 patent

TOKONAMI SHIHO

1 patent

(unassigned)

1 patent