Eiichi Otsuka

CL C.I. Kasei Company, Limited: 1 patents #17 of 42Top 45%

NC Nihon Dempa Kogyo Co.: 1 patents #180 of 296Top 65%

📍 Kōnosu, JP: #22 of 46 inventorsTop 50%

Overall (All Time): #2,131,778 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
7489210	Surface acoustic wave filter and transmitter-receiver	—	2009-02-10
5290844	Water-swellable adhesive water stop	—	1994-03-01