MW

Minoru Watanabe

Sumitomo Electric Industries: 5 patents #26 of 1,127Top 3%
NP Nippon Telegraph And Telephone Public: 2 patents #1 of 48Top 3%
NT NTT: 1 patents #30 of 180Top 20%
Overall (1989): #2,441 of 140,708Top 2%
5
Patents 1989

Issued Patents 1989

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
4832720 Method for producing multi-core optical fiber Hiroshi Yokota, Shuzo Suzuki, Hiroshi Suganuma 1989-05-23
4812155 Method for production of glass preform for optical fibers Michihisa Kyoto, Naoki Yoshioka, Gotaro Tanaka, Hiroo Kanamori, Motohiro Nakahara 1989-03-14
4804247 Quartz glass optical fiber Michihisa Kyoto, Shuzo Suzuki, Motohiro Nakahara 1989-02-14
4804393 Methods for producing optical fiber preform and optical fiber Koji Yano, Michihisa Kyoto, Masao Hoshikawa 1989-02-14
4797143 Process for the production of optical fiber preforms Kazunori Chida, Hiroshi Yokota, Michihisa Kyoto, Hisao Sato, Naoki Yoshioka 1989-01-10