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Youji Yoshikawa

CC Citizen Watch Co.: 1 patents #668 of 1,225Top 55%
Overall (All Time): #4,043,376 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4480010 Method and coating materials by ion plating Yasutomo Sasanuma, Masao Koshi, Teruaki Takahashi, Shotaro Shimizu, Mitsugu Enomoto 1984-10-30