HW

Hachihei Watanabe

TO Toto: 2 patents #431 of 1,113Top 40%
Overall (All Time): #2,265,491 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5829468 Valve device using pipes and method of manufacturing it Masatoshi Enoki, Katsuaki Nakamura, Tatsuo Matsukuma, Tsuguya Okubo, Akira Yubisui +4 more 1998-11-03
5143295 Bubbly water outlet device Kenji Okayama, Yoshitaka Oba, Masahiko Imazono, Masatoshi Enoki, Masao Shimizu +6 more 1992-09-01