Partial year: Data through Q3 2025 (Sept 30). Full-year totals not yet available.
EY

Etsushi Yamazaki

NT NTT: 4 patents #55 of 767Top 8%
Overall (2025): #37,158 of 469,880Top 8%
4
Patents 2025

Issued Patents 2025

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
12224797 Optical wireless communication device and optical wireless communication method Kazumitsu SAKAMOTO, Yohei Katayama, Kento YOSHIZAWA, Takeshi Kinoshita, Takayuki Mizuno +1 more 2025-02-11
12224889 Adaptive equalization filter and method for updating filter coefficients Seiji Okamoto, Masanori Nakamura, Kengo Horikoshi, Takeo SASAI, Yoshiaki Kisaka 2025-02-11
12206450 Phase difference distribution estimation method and phase difference distribution estimation apparatus Yohei Katayama, Kazumitsu SAKAMOTO, Kento YOSHIZAWA, Hiroyuki Fukumoto, Takuya Ohara +2 more 2025-01-21
12206458 Communication apparatus and optical communication system Yohei Katayama, Kazumitsu SAKAMOTO, Kento YOSHIZAWA, Hiroyuki Fukumoto, Takuya Ohara +2 more 2025-01-21