TO

Tetsumi Ohtsuka

DK Denki Kagaku Kogyo: 1 patents #291 of 655Top 45%
Overall (All Time): #3,264,985 of 4,157,543Top 80%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
8029903 Silicon nitride substrate, silicon nitride circuit board utilizing the same, and use thereof Takeshi Gotoh, Motoharu FUKAZAWA 2011-10-04