HK

Hitoshi Kuma

IC Idemitsu Kosan Co.: 42 patents #22 of 1,237Top 2%
KU Keio University: 1 patents #190 of 781Top 25%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
Overall (All Time): #70,075 of 4,157,543Top 2%
43
Patents All Time

Issued Patents All Time

Showing 25 most recent of 43 patents

Patent #TitleCo-InventorsDate
12077500 Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device Satomi TASAKI, Masahiro Kawamura, Toshinari Ogiwara, Kei Yoshida, Keiji Okinaka 2024-09-03
12022728 Organic electroluminescent element and electronic device Ryota Takahashi, Tomoki Kato, Hirokatsu Ito, Masahiro Kawamura, Masakazu Funahashi +4 more 2024-06-25
11856808 Organic electroluminescent element and electronic device drivable at low voltage with improved lifetime Masato Nakamura, Emiko Kambe, Hiroaki TOYOSHIMA, Kazuki Nishimura 2023-12-26
11739061 Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device Satomi TASAKI, Masahiro Kawamura, Toshinari Ogiwara, Kei Yoshida, Keiji Okinaka 2023-08-29
11552251 Organic electroluminescent element and electronic device Ryota Takahashi, Tomoki Kato, Hirokatsu Ito, Masahiro Kawamura, Masakazu Funahashi +4 more 2023-01-10
11059781 Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device Satomi TASAKI, Masahiro Kawamura, Toshinari Ogiwara, Kei Yoshida, Keiji Okinaka 2021-07-13
10862049 Composition, organic-electroluminescence-device material, composition film, organic electroluminescence device, and electronic device Masahiro Kawamura, Hiroyuki Iwabuchi, Tetsuya Masuda 2020-12-08
10851055 Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device Satomi TASAKI, Masahiro Kawamura, Toshinari Ogiwara, Kei Yoshida, Keiji Okinaka 2020-12-01
10590080 Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device Satomi TASAKI, Masahiro Kawamura, Toshinari Ogiwara, Kei Yoshida, Keiji Okinaka 2020-03-17
RE47654 Organic electroluminescence device Yuichiro Kawamura, Masahiro Kawamura, Hirokatsu Ito 2019-10-22
10297761 Organic electroluminescent element Masahiro Kawamura, Toshinari Ogiwara, Satomi TASAKI, Yumiko Mizuki, Kazuki Nishimura +1 more 2019-05-21
10186665 Organic electroluminescent element Masahiro Kawamura, Yumiko Mizuki, Toshinari Ogiwara 2019-01-22
9882144 Organic electroluminescent element Masahiro Kawamura, Yumiko Mizuki, Toshinari Ogiwara 2018-01-30
9812661 Organic electroluminescent device Yuichiro Kawamura, Yukitoshi Jinde, Toshinari Ogiwara, Chishio Hosokawa 2017-11-07
9324950 Organic electroluminescence device Yuichiro Kawamura, Hiroyuki Saito, Masahiro Kawamura, Yukitoshi Jinde, Hirokatsu Ito +2 more 2016-04-26
9184414 Organic electroluminescent element and lighting device Ryo Naraoka, Masahiko Fukuda 2015-11-10
9153790 Organic electroluminescent device Yuichiro Kawamura, Yukitoshi Jinde, Toshinari Ogiwara, Chishio Hosokawa 2015-10-06
9095033 Organic electroluminescence element Ryo Naraoka, Hiroyuki Saito, Chishio Hosokawa 2015-07-28
8987715 Organic electroluminescence element Kazuki Nishimura, Chishio Hosokawa, Hideaki Nagashima, Masaki Numata 2015-03-24
8883323 Organic electroluminescence device Yuichiro Kawamura, Hiroyuki Saito, Masahiro Kawamura, Yukitoshi Jinde, Hirokatsu Ito +2 more 2014-11-11
8803420 Organic electroluminescence device Yuichiro Kawamura, Masahiro Kawamura, Hirokatsu Ito 2014-08-12
8723171 Organic electroluminescence device Kazuki Nishimura, Yuichiro Kawamura, Toshinari Ogiwara, Kenichi Fukuoka, Chishio Hosokawa 2014-05-13
8710493 Organic electroluminescent element Kazuki Nishimura, Toshinari Ogiwara, Kenichi Fukuoka, Chishio Hosokawa, Yukitoshi Jinde 2014-04-29
8476823 Organic electroluminescent device Yuichiro Kawamura, Yukitoshi Jinde, Toshinari Ogiwara, Chishio Hosokawa 2013-07-02
8461574 Organic electroluminescence device Kazuki Nishimura, Yuichiro Kawamura, Toshinari Ogiwara, Kenichi Fukuoka, Chishio Hosokawa 2013-06-11