TT

Takemasa TSUTSUI

Ricoh Company: 2 patents #5,693 of 9,818Top 60%
Overall (All Time): #1,719,486 of 4,157,543Top 45%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
12332449 Light guide, optical unit, virtual image display device, and head-mounted display 2025-06-17
12181673 Propagation optical system and virtual image display device Yoshifumi Sudoh, Naoki Nakamura, Masahiro Itoh, Susumu Momma, Shun OKAZAKI +7 more 2024-12-31