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

Tetsuya Ishimaru — 43 Patents

RERenesas Electronics: 17 patents #139 of 4,529Top 4%
RTRenesas Technology: 11 patents #212 of 3,337Top 7%
HDHitachi Power Semiconductor Device: 9 patents #2 of 79Top 3%
Hitachi: 6 patents #6,585 of 28,497Top 25%
Tokyo, JP: #2,519 of 90,295 inventorsTop 3%
Overall (All Time): #69,380 of 4,157,543Top 2%
43 Patents All Time
Tetsuya Ishimaru has been granted 43 US patents while listed as an inventor at Renesas Electronics. The first was granted in 2005 and the most recent in April 2025. Tetsuya Ishimaru ranks #69,380 of 4,157,543 US inventors in our database (top 1.7%). Patent records list Tetsuya Ishimaru in Tokyo, JP.

Patents per Year

Patents granted per year, 2005 to 2025Bar chart with a peak of 8 patents in 2011.peak 82005: 1 patents20052006: 2 patents2007: 2 patents20072008: 1 patents2009: 2 patents20092010: 5 patents2011: 8 patents20112012: 2 patents2013: 2 patents20132014: 2 patents2015: 1 patents20152017: 1 patents2018: 3 patents20182019: 3 patents2020: 1 patents20202021: 2 patents2023: 1 patents20232024: 3 patents2025: 1 patents2025

Issued Patents All Time

Showing 1–25 of 43 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12266252 Work content detection determination device, work content detection determination system, and wearable sensor embedded glove Hiroyuki Yoshimoto, Yoshihiro Wakisaka, Nobuyuki Sugii 2025-04-01
12154446 Operational information management system and wearable sensor Hiroyuki Yoshimoto, Nobuyuki Sugii, Yoshihiro Wakisaka, Noriyuki Haga 2024-11-26
11900777 Work content detection determination device, work content detection determination system, and wearable sensor embedded glove Hiroyuki Yoshimoto, Yoshihiro Wakisaka, Nobuyuki Sugii 2024-02-13
11875694 Operational information management system and wearable sensor Hiroyuki Yoshimoto, Nobuyuki Sugii, Yoshihiro Wakisaka, Noriyuki Haga 2024-01-16
11653882 Sensor data correction system Yoshihiro Wakisaka, Nobuyuki Sugii, Noriyuki Haga, Hiroyuki Yoshimoto 2023-05-23
11049965 Semiconductor device and alternator using the same Masaki Shiraishi, Junichi Sakano, Mutsuhiro Mori, Shinichi Kurita 2021-06-29
11012022 Inverter device and electric motor device using same Junichi Sakano, Shinichi Kurita 2021-05-18
10852209 Water leak sensing system and method Toshiyuki Mine, Yuudai KAMADA, Kazuo Ono 2020-12-01
10319849 Semiconductor device, and alternator and power conversion device which use same Mutsuhiro Mori, Junichi Sakano, Kohhei Onda 2019-06-11
10304761 Semiconductor device and alternator using same Kenya Kawano, Shinichi Kurita, Takeshi TERAKAWA 2019-05-28
10205314 Rectifier including MOSFET and hold circuit that boosts gate voltage of MOSFET, and alternator using the same Mutsuhiro Mori, Shinichi Kurita 2019-02-12
10079536 Rectifier, alternator using same and power supply using same Shinichi Kurita, Takeshi TERAKAWA 2018-09-18
10069436 Synchronous rectifier and alternator using the same Kohhei Onda, Shinichi Kurita, Shigeru Sugayama 2018-09-04
9966871 Rectification device, alternator, and power conversion device Kohhei Onda, Junichi Sakano, Mutsuhiro Mori 2018-05-08
9831145 Semiconductor device, and alternator and power converter using the semiconductor device Mutsuhiro Mori, Shinichi Kurita, Shigeru Sugayama, Junichi Sakano, Kohhei Onda 2017-11-28
9117849 Nonvolatile semiconductor device and method of manufacturing the same Kenichi Akita, Daisuke Okada, Keisuke Kuwahara, Yasufumi Morimoto, Yasuhiro Shimamoto +2 more 2015-08-25
8796756 Nonvolatile semiconductor device and method of manufacturing the same Kenichi Akita, Daisuke Okada, Keisuke Kuwahara, Yasafumi Morimoto, Yasuhiro Shimamoto +2 more 2014-08-05
8679915 Non-volatile semiconductor device and method of fabricating embedded non-volatile semiconductor memory device with sidewall gate Kan Yasui, Digh Hisamoto, Shin Kimura 2014-03-25
8472258 Semiconductor nonvolatile memory device Digh Hisamoto, Kan Yasui, Shinichiro Kimura, Daisuke Okada 2013-06-25
8390053 Nonvolatile semiconductor device including a field effect transistor having a charge storage layer of predetermined length Kenichi Akita, Daisuke Okada, Keisuke Kuwahara, Yasufumi Morimoto, Yasuhiro Shimamoto +2 more 2013-03-05
8324092 Non-volatile semiconductor device and method of fabricating embedded non-volatile semiconductor memory device with sidewall gate Kan Yasui, Digh Hisamoto, Shin Kimura 2012-12-04
8125012 Non-volatile memory device with a silicon nitride charge holding film having an excess of silicon Toshiyuki Mine, Kan Yasui, Yasuhiro Shimamoto 2012-02-28
8076709 Nonvolatile semiconductor memory device Digh Hisamoto, Kan Yasui, Shinichiro Kimura 2011-12-13
8064261 Semiconductor nonvolatile memory device Digh Hisamoto, Kan Yasui, Shinichiro Kimura, Daisuke Okada 2011-11-22
8063433 Nonvolatile semiconductor memory device Yasuhiro Shimamoto, Toshiyuki Mine, Yasunobu Aoki, Koichi Toba, Kan Yasui 2011-11-22