HT

Hibiki Tatsuno

Ricoh Company: 6 patents #40 of 1,584Top 3%
Overall (2019): #25,175 of 560,194Top 5%
6
Patents 2019

Issued Patents 2019

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
10451961 Focus adjustment system for an image display device Kiichiro Nishina, Yasuyuki Shibayama, Takanobu Osaka, Makoto Hirakawa 2019-10-22
10338381 Image display apparatus and head-up display system 2019-07-02
10310238 Magnification optical system Kiichiro Nishina, Yasuyuki Shibayama, Takanobu Osaka, Makoto Hirakawa 2019-06-04
10241308 Projection optical system including movable lens groups and image display apparatus Yohei Takano, Nobuyuki Arai, Hirotoshi Nakayama 2019-03-26
10228546 Projection optical system, projection apparatus, and projection system Yohei Takano, Yasuyuki Shibayama 2019-03-12
10175568 Projective optical system and image projection device including a shielding unit 2019-01-08