JR

Joonyoung Roh

HC Hitachi Construction Machinery Co.: 3 patents #381 of 1,234Top 35%
Overall (All Time): #1,369,824 of 4,157,543Top 35%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
12043989 Working machine Hiroshi Sakamoto, Youhei TORIYAMA, Naoki Hayakawa 2024-07-23
11427984 Work machine Kunitsugu Tomita, Satoshi Nakamura 2022-08-30
11306460 Work machine Satoshi Nakamura, Kunitsugu Tomita, Youhei TORIYAMA 2022-04-19