TA

Tomoyuki Akiyama

NC Nippon Silica Glass Co.: 1 patents #1 of 5Top 20%
TO Tosoh: 1 patents #6 of 59Top 15%
Overall (1997): #66,616 of 185,788Top 40%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

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