SY

Shinzo Yamakawa

NP Nippon Telegraph And Telephone Public: 1 patents #4 of 48Top 9%
📍 Hitachinaka, JP: #68 of 240 inventorsTop 30%
Overall (1989): #56,501 of 140,708Top 45%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4801186 Coated optical fiber, fabrication process thereof and fabrication apparatus thereof Makoto Wagatsuma, Fumio Yamamoto, Takao Kimura, Yoshito Shuto 1989-01-31