Kei Hirai

4 Patents

• US125842042026

  Steel Wire

  Sumitomo Electric Industries, Ltd.

  0 cites
• US124671192025

  Diamond Sintered Material and Tool Including Diamond Sintered Material

  Sumitomo Electric Industries, Ltd.

  0 cites
• US124514072025

  Composite Material, Semiconductor Package, and Method of Manufacturing Composite Material

  A.L.M.T. Corp.

  0 cites
• US124285852025

  Coated Super-abrasive Grains, Abrasive Grains, and Wheel

  A.L.M.T. Corp.

  0 cites