YK

Yukihisa Kumagai

PC Polyplastics Co.: 2 patents #103 of 292Top 40%
SC Sanyo Electric Co.: 1 patents #3,644 of 6,347Top 60%
Overall (All Time): #1,588,334 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7242610 Ultraviolet erasable semiconductor memory device 2007-07-10
5314326 Mold having a resin well forming a weld at the union of two separate resin streams Yoshihiro Furugohri 1994-05-24
5225136 Injection molding method forming strengthened weld by using well Yoshihiro Furugohri 1993-07-06