KU

Ken-ichi Umekita

WI Wako Pure Chemical Industries: 3 patents #56 of 377Top 15%
Overall (All Time): #1,603,532 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6716803 Cleaning agent for a semi-conductor substrate Masahiko Kakizawa, Ichiro Hayashida 2004-04-06
6534458 Cleaning agent for a semi-conductor substrate Masahiko Kakizawa, Ichiro Hayashida 2003-03-18
6310019 Cleaning agent for a semi-conductor substrate Masahiko Kakizawa, Ichiro Hayashida 2001-10-30