YM

Yoshiaki Matsubara

Ngk Spark Plug Co.: 2 patents #13 of 76Top 20%
📍 Yokohama, JP: #55 of 176 inventorsTop 35%
Overall (1994): #15,622 of 165,921Top 10%
2
Patents 1994

Issued Patents 1994

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5323643 Device for detecting change in internal pressure of cylinder Takao Kojima, Mitsuru Kondo 1994-06-28
5313849 Device for temporarily holding pressure sensor in place within spark plug attaching hole of cylinder head Shigeru Miyata, Takao Kojima 1994-05-24