YW

Yasushi Washio

TC Tokyo Ohka Kogyo Co.: 1 patents #12 of 58Top 25%
Overall (2005): #72,862 of 245,428Top 30%
1
Patents 2005

Issued Patents 2005

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6838229 Chemically amplified negative photoresist composition for the formation of thick films, photoresist base material and method of forming bumps using the same Koji Saito, Toshiki Okui, Hiroshi Komano 2005-01-04