Masashi Yamasaki has been granted 59 US patents while listed as an inventor at Denso . The first was granted in 1998 and the most recent in July 2025. Masashi Yamasaki ranks #40,067 of 4,157,543 US inventors in our database (top 0.96%). Patent records list Masashi Yamasaki in Yokohama, JP.
Patents per Year Patents granted per year, 1998 to 2025 Bar chart with a peak of 8 patents in 2019. peak 8 1998: 1 patents 1998 2008: 1 patents 2009: 1 patents 2009 2010: 4 patents 2012: 3 patents 2012 2013: 4 patents 2014: 7 patents 2014 2015: 5 patents 2016: 7 patents 2016 2017: 5 patents 2018: 4 patents 2018 2019: 8 patents 2020: 3 patents 2020 2021: 1 patents 2022: 1 patents 2022 2023: 1 patents 2024: 2 patents 2024 2025: 1 patents 2025 Issued Patents All Time
Showing 1–25 of 59 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
12372678 Calibration device and calibration method for detector Shuichiro Yamamoto , Masahiro Okada , Daisuke Hashimoto , Hiroaki Hayashi , Natsumi KIMOTO 2025-07-29
12040681 Rotary electric machine Hiroki Tomizawa , Asuka Tanaka , Takamasa Mutou , Yasuaki Koyano , Hisashi Yamamoto +1 more 2024-07-16
11888345 Drive device and drive unit Yukio Horiba 2024-01-30
11801887 Drive device — 2023-10-31
11346734 Drive device Yukio Horiba 2022-05-31
10897219 Drive apparatus and electric power steering apparatus using the same — 2021-01-19
10697904 X-ray detection system, X-ray device, and device and method for processing X-ray detection data Tsutomu Yamakawa , Shuichiro Yamamoto , Masahiro Okada 2020-06-30
10556618 Drive apparatus and electric power steering apparatus using the same — 2020-02-11
10539516 X-ray inspection apparatus and X-ray inspection method Tsutomu Yamakawa , Shuichiro Yamamoto 2020-01-21
10502698 Data processing apparatus and data processing method for X-ray examination, and X-ray examination system provided with the data processing apparatus Tsutomu Yamakawa , Shuichiro Yamamoto , Yoshiharu Obata , Masahiro Okada 2019-12-10
10424991 Drive device — 2019-09-24
10414428 Drive device and electric power steering apparatus — 2019-09-17
10411552 Drive device — 2019-09-10
10404141 Drive unit including terminals in resilient contact with each other Hideki Kabune , Takeshi Sawada 2019-09-03
10340765 Drive apparatus having motor unit received in motor case — 2019-07-02
10214233 Drive apparatus and electric power steering apparatus using the same — 2019-02-26
10211771 Drive apparatus and electric power steering apparatus using the same — 2019-02-19
10033253 Drive device Hideki Kabune 2018-07-24
9979253 Drive apparatus having motor unit received in motor case — 2018-05-22
9912208 Drive apparatus — 2018-03-06
9899890 Drive device with heat sink and angled motor terminal Mikihiro Hiramine , Toshihiro Fujita 2018-02-20
9831738 Rotating electric machine with sealing members Daisuke Yamashita 2017-11-28
9789899 Drive device and electric power steering apparatus — 2017-10-17
9742244 Driver device Yasufumi Matsuo 2017-08-22
9735643 Rotating electric machine with seamless cover and lid section — 2017-08-15
