KH

Keijiro Hiraga

NM National Research Institute For Metals: 1 patents #66 of 167Top 40%
Overall (All Time): #3,962,913 of 4,157,543Top 100%
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Patent #TitleCo-InventorsDate
4784827 Nonmagnetic steel for cryogenic use Keisuke Ishikawa 1988-11-15