HT

Hidekazu Tsurumaru

NL Nippon Mining Company Limited: 2 patents #46 of 262Top 20%
TC Tatsuta Electric Wire & Cable Co.: 2 patents #35 of 100Top 35%
MH Misawa Home: 1 patents #6 of 14Top 45%
Overall (All Time): #2,319,966 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5064890 Noise insulating material Nobuhiro Fujio, Takeshi Yamasaki, Isao Negishi, Toshio Nishizaki, Takashi Suzuki 1991-11-12
4814018 Filler for noise insulating material and noise insulating material using same Nobuhiro Fujio, Takeshi Yamasaki, Toshio Nishizaki, Isao Negisi 1989-03-21