Masahiro Mamiya

CC Citizen Holdings Co.: 2 patents #121 of 431Top 30%

CC Citizen Watch Co.: 1 patents #668 of 1,225Top 55%

📍 Nishitokyo, JP: #135 of 277 inventorsTop 50%

Overall (All Time): #2,006,557 of 4,157,543Top 50%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
9342055	Electronic watch	Tsuneharu Kasai, Michihiro Enokida, Tetsuro Maruyama, Fumio Nakamura	2016-05-17
8328415	Clock with wireless function	Setsuo Kachi	2012-12-11