AU

Akitoshi Usui

HO Hoya: 2 patents #523 of 1,290Top 45%
RS Ricoh Industrial Solutions: 1 patents #1 of 7Top 15%
Overall (All Time): #1,316,992 of 4,157,543Top 35%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12222480 Projection zoom lens and projection device 2025-02-11
10209494 Imaging optical system Yutaka Takakubo 2019-02-19
10082648 Imaging optical system Yutaka Takakubo 2018-09-25