YH

Yukinobu Hara

NC Nippon Silica Glass Co.: 1 patents #9 of 32Top 30%
TO Tosoh: 1 patents #576 of 1,042Top 60%
Overall (All Time): #3,724,222 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5665133 Process for production of pure transparent quartz Koichi Orii, Tomoyuki Akiyama, Koji Tsukuma, Yoshikazu Kikuchi 1997-09-09