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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
KY

Kunta Yoshikawa — 27 Patents

KAKaneka: 27 patents #14 of 1,525Top 1%
Settsu, JP: #17 of 603 inventorsTop 3%
Overall (All Time): #142,059 of 4,157,543Top 4%
27 Patents All Time
Kunta Yoshikawa has been granted 27 US patents while listed as an inventor at Kaneka. The first was granted in 2013 and the most recent in January 2025. Kunta Yoshikawa ranks #142,059 of 4,157,543 US inventors in our database (top 3.4%). Patent records list Kunta Yoshikawa in Settsu, JP.

Patents per Year

Patents granted per year, 2013 to 2025Bar chart with a peak of 7 patents in 2021.peak 72013: 3 patents20132015: 2 patents20152019: 2 patents20192020: 5 patents20202021: 7 patents20212022: 6 patents20222023: 1 patents20232025: 1 patents2025

Issued Patents All Time

Showing 1–25 of 27 patents

Patent #TitleCo-InventorsDate
12191407 Crystal silicon solar cell module and cell aggregate for crystal silicon solar cell module 2025-01-07
11621358 Solar cell, solar cell production method, and solar cell module Hisashi Uzu 2023-04-04
11508866 Photoelectric conversion element and photoelectric conversion device Takashi Kuchiyama 2022-11-22
11482637 Photoelectric conversion element and photoelectric conversion device 2022-10-25
11402262 Photoelectric conversion device 2022-08-02
11404593 Double-sided electrode type solar cell and solar cell module Yuji Takahashi, Shinya Omoto 2022-08-02
11335818 Solar cell and production method therefor, and solar cell module Katsunori Konishi, Kunihiro Nakano, Hayato Kawasaki 2022-05-17
11302829 Photovoltaic device and method for manufacturing photovoltaic device Kunihiro Nakano, Takashi Kuchiyama 2022-04-12
11177407 Method for manufacturing solar cell, solar cell, and solar cell module Tooru Irie, Wataru Yoshida 2021-11-16
11125612 Photoelectric conversion element and photoelectric conversion device Takashi Kuchiyama 2021-09-21
11063160 Solar cell module Toru Terashita 2021-07-13
10998456 Solar cell, method for manufacturing same and solar cell module Daisuke Adachi, Toru Terashita, Masafumi Hiraishi 2021-05-04
10964826 Solar cell and production method therefor, and solar cell module Daisuke Adachi 2021-03-30
10962411 Photoelectric conversion element and photoelectric conversion device 2021-03-30
10916667 Solar cell and production method therefor, and solar cell module Katsunori Konishi, Kunihiro Nakano, Hayato Kawasaki 2021-02-09
10854767 Solar cell and method for manufacturing same Hayato Kawasaki, Kunihiro Nakano, Katsunori Konishi, Kenji Yamamoto 2020-12-01
10727360 Photoelectric conversion device and method for manufacturing same Katsunori Konishi, Hayato Kawasaki, Kunihiro Nakano 2020-07-28
10644178 Solar battery and solar battery module Kunihiro Nakano, Hayato Kawasaki, Katsunori Konishi 2020-05-05
10593820 Solar cell module and method for manufacturing same Kunihiro Nakano, Toru Terashita, Masafumi Hiraishi, Kenji Yamamoto 2020-03-17
10566470 Solar cell, method for manufacturing same and solar cell module Daisuke Adachi, Toru Terashita, Masafumi Hiraishi 2020-02-18
10446698 Photoelectric conversion device and method for manufacturing same Katsunori Konishi, Hayato Kawasaki, Kunihiro Nakano 2019-10-15
10340848 I-V measurement device for solar cell, manufacturing method for solar cell, and solar cell module Hayato Kawasaki, Kunihiro Nakano, Kenji Yamamoto 2019-07-02
9166089 Thin film solar cell module Mitsuru Ichikawa, Kenji Yamamoto 2015-10-20
9147780 Solar cell, method for manufacturing same, and solar cell module Nick Valckx, Masanori Kanematsu, Jose Luis Hernandez, Daisuke Adachi 2015-09-29
8546685 Crystalline silicon based solar cell and method for manufacturing thereof Daisuke Adachi, Kenji Yamamoto 2013-10-01