Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
RK

Ryuichiro Kamimura

ULUlvac: 2 patents #1 of 68Top 2%
MAMarubun: 1 patents #1 of 8Top 15%
RIRiken: 1 patents #17 of 165Top 15%
TCTokyo Ohka Kogyo Co.: 1 patents #30 of 86Top 35%
TKToshiba Kikai: 1 patents #2 of 26Top 8%
Overall (2021): #117,114 of 548,734Top 25%
2 Patents 2021

Issued Patents 2021

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10991591 Reactive ion etching apparatus Yamato Osada 2021-04-27
10950751 Deep ultraviolet LED and method for manufacturing the same Yukio Kashima, Eriko Matsuura, Mitsunori Kokubo, Takaharu Tashiro, Hideki Hirayama +2 more 2021-03-16