RA

Ryota Arai

Ricoh Company: 22 patents #966 of 9,818Top 10%
KU Kyushu University, National University: 4 patents #50 of 767Top 7%
HI Hitachi: 2 patents #13,388 of 28,497Top 50%
Overall (All Time): #170,118 of 4,157,543Top 5%
24
Patents All Time

Issued Patents All Time

Showing 1–24 of 24 patents

Patent #TitleCo-InventorsDate
12041797 Photoelectric conversion element, device, and power supply module 2024-07-16
11950503 Organic material and photoelectric conversion element Takuma Yasuda, Seiichi Furukawa, Narumi SATO 2024-04-02
11832461 Photoelectric conversion module, electronic device, and power supply module Takaya Ito, Tomoya Hirano 2023-11-28
11069485 Photoelectric conversion element Naomichi Kanei, Yuuji Tanaka, Tamotsu Horiuchi 2021-07-20
10763050 Photoelectric conversion element Yuuji Tanaka, Tsuyoshi Matsuyama, Tokushige Kino, Shigeyo Suzuki, Naomichi Kanei 2020-09-01
10727001 Photoelectric conversion element Naomichi Kanei, Yuuji Tanaka, Tamotsu Horiuchi 2020-07-28
10686134 Photoelectric conversion element Yuuji Tanaka, Tsuyoshi Matsuyama, Tokushige Kino, Naomichi Kanei 2020-06-16
10651390 Tertiary amine compound, photoelectric conversion element, and solar cell Tsuyoshi Matsuyama, Yuuji Tanaka, Tokushige Kino, Naomichi Kanei, Tamotsu Horiuchi 2020-05-12
10629826 Organic compound and photoelectric conversion element Takuma Yasuda, Yu Hidaka, Woong Shin 2020-04-21
10062854 Organic material and photoelectric conversion element Takuma Yasuda, Woong Shin, Hideaki Komiyama, Yu Hidaka, Takahiro To +1 more 2018-08-28
9590187 Substituent-eliminable diketopyrrolopyrrole derivative, organic semiconductor material precursor solution, organic semiconductor material, and organic semiconductor material film Yoshiki Yanagawa 2017-03-07
9406887 Solution, organic semiconductor material, organic semiconductor film, electronic device and electronic equipment Yoshiki Yanagawa 2016-08-02
9378899 Photoelectric conversion element Yuuji Tanaka, Tamotsu Horiuchi 2016-06-28
9373450 Photoelectric conversion element Yuuji Tanaka, Tamotsu Horiuchi 2016-06-21
9365513 Fullerene derivative, and method of preparing the same Yoshiki Yanagawa 2016-06-14
9246110 Organic material and photoelectric conversion element Yu Hidaka, Woong Shin, Chihaya Adachi, Takuma Yasuda 2016-01-26
9040215 Amine compound, electrophotographic photoconductor, image forming method, image forming apparatus, and process cartridge Tomoyuki Shimada, Masayoshi Nomura 2015-05-26
9005856 Hydroxygallium porphyrazine derivative mixture and electrophotographic photoconductor Tomoyuki Shimada 2015-04-14
8889324 Image bearing member, image forming method, image forming apparatus, and process cartridge Tomoyuki Shimada 2014-11-18
8809543 Electrophotographic photoreceptor, electrophotographic image forming method, electrophotographic image forming apparatus, and process cartridge for electrophotographic image forming apparatus Tomoyuki Shimada 2014-08-19
8701979 Cabling work aiding system and work aiding method Toshimi Yokota, Kenji Araki, Ryosuke Shigemi, Shinya Yuda, Munetoshi Unuma +1 more 2014-04-22
8586270 Electrophotographic photoconductor, electrophotographic method, and electrophotographic apparatus Tomoyuki Shimada, Minoru Umeda 2013-11-19
8395804 RFID registration system and method thereof Toshimi Yokota, Ryosuke Shigemi, Shinya Yuda, Munetoshi Unuma, Kozo Nakamura 2013-03-12
8304153 Electrophotographic photoreceptor, electrophotographic image forming method, electrophotographic image forming apparatus, electrophotographic process cartridge Tomoyuki Shimada 2012-11-06