AK

Akihiko Koba

NO Nok: 1 patents #382 of 725Top 55%
TO Toto: 1 patents #620 of 1,113Top 60%
Overall (All Time): #2,184,911 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6966536 Flush valve device of flush toilet Kazuyuki Enomoto, Jyunichi Tani, Katsuhiko Nagano 2005-11-22
5165701 Magnetic fluid seal apparatus 1992-11-24