YK

Yoshihiko Kawahara

Ngk Spark Plug Co.: 1 patents #959 of 1,594Top 65%
NI Nisshinbo Industries: 1 patents #182 of 375Top 50%
Overall (All Time): #2,199,908 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6533115 Packaging box for spark plugs Yoshiaki Saiki, Tomoaki Aoki, Hisaki Sanoi 2003-03-18
5885692 Wave absorber Yasuo Imashiro, Shun Hasegawa, Isao Kato 1999-03-23