YH

Yoshiya HAMAMACHI

HC Hitachi Construction Machinery Co.: 2 patents #502 of 1,234Top 45%
Overall (All Time): #1,856,188 of 4,157,543Top 45%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11447936 Oil diagnosis system Hiroki TAKAMI, Akira KURASAKO, Kotaro Ogura, Hideki Akita, Hiroshi Onose 2022-09-20
10087605 Oil properties diagnostic system for work machine Teruo Nakamura, Akira KURASAKO, Hideki Akita, Katsutoshi Hakozaki, Kotaro Ogura 2018-10-02