RK

Ryota Koike

CC Citizen Watch Co.: 2 patents #13 of 135Top 10%
Overall (2002): #43,302 of 266,432Top 20%
2
Patents 2002

Issued Patents 2002

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6419997 Guide bush and method of forming hard carbon film over the inner surface of the guide bush Yukio Miya, Osamu Sugiyama, Takashi Toida, Sosaku Kimura, Kunihiko Kokubo 2002-07-16
6337000 Guide bush and method of forming diamond-like carbon film over the guide bush Yukio Miya, Osamu Sugiyama, Takashi Toida 2002-01-08