Jun Narushima has been granted 5 US patents while listed as an inventor at Hitachi . The first was granted in 2014 and the most recent in July 2025. Jun Narushima ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Jun Narushima in Tokyo, JP.
Patents per Year Patents granted per year, 2014 to 2025 Bar chart with a peak of 1 patents in 2014. peak 1 2014: 1 patents 2014 2016: 1 patents 2016 2017: 1 patents 2017 2018: 1 patents 2018 2025: 1 patents 2025
Issued Patents All Time
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Showing 1–5 of 5 patents
Patent # Title Co-Inventors Date
12355377 Adjustable speed generator motor system with full power converter Akira Bando , Takahiko Kikui , Kenta Watanabe , Yasuhiro Kiyofuji , Masakazu Ishikawa +3 more 2025-07-08
9917534 Power conversion device with a plurality of series circuits Shigenori Inoue , Shuji Katoh , Tetsuya Kato 2018-03-13
9573489 Control device for railway power conditioner and control system for railway power conditioner Yasuhiro Nakatsuka , Yasuhiro Imazu , Osamu Sakuchi , Masaya Ichinose , Yasuhiro Kiyofuji +6 more 2017-02-21
9461560 Power conversion device with a plurality of series circuits Shigenori Inoue , Shuji Katoh , Tetsuya Kato 2016-10-04
8792261 Power conversion device Shigenori Inoue , Shuji Katoh , Tetsuya Kato 2014-07-29
