AT

Akiyoshi Takizawa

RI Riken: 1 patents #679 of 1,824Top 40%
Overall (All Time): #3,498,652 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6834861 Two piece oil control ring with nitrided surface layers Nobuo Katayama 2004-12-28