RH

Ryoji Hirai

HI Hitachi: 6 patents #6,582 of 28,497Top 25%
HA Hapsmobile: 2 patents #7 of 32Top 25%
SO Softbank: 1 patents #59 of 194Top 35%
PA Panasonic: 1 patents #13,264 of 21,108Top 65%
📍 Mobara, JP: #119 of 731 inventorsTop 20%
Overall (All Time): #486,962 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
11968025 Detection of interference between multifeeder links in HAPS communication system 2024-04-23
D1010485 Contactless sensor unit for automatic door Tatsuhiro Tsumori, Katsuyuki Okumura, Kakeru Kando, Kazuho Miyayama, Koichi Imai 2024-01-09
11641234 Interference detection and interference suppression of reverse link communication in feeder link of HAPS communication system 2023-05-02
11171715 Control device, program, control method, and flight vehicle Jutatsu Sai 2021-11-09
5606217 Color cathode ray tube of shadow mask type Yuuichi Inoue 1997-02-25
4943754 Color picture tube with flat appearing face plate Mitsuru Yoshizawa, Hiroyuki Ikeda 1990-07-24
4924140 Color picture tube of shadow mask type with particular faceplate panel structure Eiichi Yamazaki, Fumiaki Yonai 1990-05-08
4754188 Color picture tube shadow mask material Rikizo Watanabe, Akira Misumi 1988-06-28
4713576 Color picture tube with shadow mask Akira Misumi, Rikizo Watanabe 1987-12-15
4475056 Color picture tube for character display 1984-10-02