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

Takafumi Ohtsuka

Sumitomo Electric Industries: 2 patents #88 of 538Top 20%
Overall (2025): #82,173 of 469,880Top 20%
2
Patents 2025

Issued Patents 2025

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
12362530 Optical amplifier and optical communication system — 2025-07-15
12345597 Mode-dependent loss measurement device and mode-dependent loss measurement method — 2025-07-01