KY

Kei Yoshida

IC Idemitsu Kosan Co.: 39 patents #25 of 1,237Top 3%
MC Mitsui Chemicals: 14 patents #76 of 2,279Top 4%
KC Kyowa Kirin Co.: 2 patents #18 of 125Top 15%
Philips: 1 patents #3,761 of 7,731Top 50%
MB Mitsubishi Fuso Truck And Bus: 1 patents #47 of 114Top 45%
ND Nitto Denko: 1 patents #1,580 of 2,479Top 65%
TL Tpo Hong Kong Holding Limited: 1 patents #26 of 61Top 45%
AT AT&T: 1 patents #10,626 of 18,772Top 60%
YK Ykk: 1 patents #472 of 845Top 60%
BL Bell Telephone Laboratories: 1 patents #567 of 1,445Top 40%
JO Joled: 1 patents #250 of 392Top 65%
📍 Sodegaura, PA: #1 of 1 inventorsTop 100%
Overall (All Time): #33,492 of 4,157,543Top 1%
65
Patents All Time

Issued Patents All Time

Showing 1–25 of 65 patents

Patent #TitleCo-InventorsDate
12312317 Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device Masatoshi Saito, Masato Nakamura, Sayaka Mizutani, Masato MITANI, Yoshinori AOYAMA +1 more 2025-05-27
12077500 Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device Satomi TASAKI, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Keiji Okinaka 2024-09-03
12054494 Compound with anticancer activity Kenji Uchida, Ryohei Kawai, Keisuke Yamamoto, Toshimi Kanai, Hideo Ikota +1 more 2024-08-06
11968894 Organic electroluminescent element, material for organic electroluminescent elements, and electronic device Toshinari Ogiwara, Satomi TASAKI 2024-04-23
11903308 Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic device Masatoshi Saito, Ryoji Maeda, Masato Nakamura, Tetsuya Masuda 2024-02-13
11765972 Compound and organic electroluminescence device using the same Yoshinao SHIRASAKI, Tetsuya Masuda, Takushi SHIOMI, Masatoshi Saito, Masato Nakamura 2023-09-19
11760742 Amide derivatives, process for preparation thereof and use thereof as insecticide Takeo Wakita, Hiroyuki Katsuta, Akiyoshi Kai, Yutaka Chiba, Kiyoshi Takahashi +6 more 2023-09-19
11739061 Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device Satomi TASAKI, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Keiji Okinaka 2023-08-29
11629152 Compound with anticancer activity Kenji Uchida, Ryohei Kawai, Keisuke Yamamoto, Toshimi Kanai, Hideo Ikota +1 more 2023-04-18
11618722 Compound, composition, organic electroluminescent element, and electronic appliance Masatoshi Saito, Yuichiro Kawamura, Toshinari Ogiwara, Kei YOSHIZAKI 2023-04-04
11569456 Organic electroluminescent element and electronic device Toshinari Ogiwara, Ryohei Hashimoto, Yumiko Mizuki 2023-01-31
11517057 Mask Satoru Furuyama, Hajime Ooya 2022-12-06
11456425 Organic electroluminescent element, and electronic apparatus Toshinari Ogiwara, Masatoshi Saito, Yuichiro Kawamura 2022-09-27
11424414 Organic electroluminescent element, electronic device, and compound Masatoshi Saito, Toshinari Ogiwara, Kei YOSHIZAKI, Yuichiro Kawamura 2022-08-23
11271164 Compound, composition, organic electroluminescent element and electronic device Masatoshi Saito, Yuichiro Kawamura, Toshinari Ogiwara, Kei YOSHIZAKI 2022-03-08
11264576 Specifically substituted ladder type compounds for organic light emitting devices Yumiko Mizuki, Kiyoshi Ikeda, Masahiro Kawamura 2022-03-01
11201297 Organic electroluminescence device and electronic device Kei YOSHIZAKI, Toshinari Ogiwara, Yuichiro Kawamura, Keiichi YASUKAWA 2021-12-14
11059781 Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device Satomi TASAKI, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Keiji Okinaka 2021-07-13
11043638 Organic electroluminescence device and electronic device Toshinari Ogiwara, Yuichiro Kawamura 2021-06-22
10995081 Amide derivatives, process for preparation thereof and use thereof as insecticide Takeo Wakita, Hiroyuki Katsuta, Akiyoshi Kai, Yutaka Chiba, Kiyoshi Takahashi +6 more 2021-05-04
10910565 Organic electroluminescent element, material for organic electroluminescent elements, and electronic device Toshinari Ogiwara, Satomi TASAKI 2021-02-02
10851055 Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device Satomi TASAKI, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Keiji Okinaka 2020-12-01
10811616 Organic electroluminescent element and electronic device Toshinari Ogiwara, Ryohei Hashimoto, Yumiko Mizuki 2020-10-20
10651398 Organic electroluminescence element and electronic device Toshinari Ogiwara 2020-05-12
10590080 Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device Satomi TASAKI, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Keiji Okinaka 2020-03-17