SH

Seiichi Hirao

NC Nippon Tungsten Co.: 1 patents #45 of 139Top 35%
SC Sumitomo Special Metals Co.: 1 patents #136 of 262Top 55%
Overall (All Time): #3,775,103 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5432016 Magnetic head slider material Toshiaki Wada, Toyoshige Sasaki, Masaharu Shiroyama, Mitsuhiko Furukawa 1995-07-11