YK

Yasunao Kai

NC Nippon Tungsten Co.: 2 patents #24 of 139Top 20%
Overall (All Time): #2,163,269 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7304105 High-density composite material Masahiro Yamauchi, Kenji Okamura 2007-12-04
5886269 Substrate and heat sink for a semiconductor and method of manufacturing the same Akira Mishima, Shinji Gotoh, Chiaki Yamasaki 1999-03-23