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USPTO Patent Rankings Data through Dec 31, 2025
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Kenta Katsuhama — 8 Patents

Hitachi: 8 patents #5,193 of 28,497Top 20%
Nissan Motor Co.: 1 patents #4,519 of 8,689Top 55%
Hitachinaka, JP: #622 of 2,447 inventorsTop 30%
Overall (All Time): #600,572 of 4,157,543Top 15%
8 Patents All Time
Kenta Katsuhama has been granted 8 US patents while listed as an inventor at Hitachi. The first was granted in 2006 and the most recent in May 2012. Kenta Katsuhama ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Kenta Katsuhama in Hitachinaka, JP.

Patents per Year

Patents granted per year, 2006 to 2012Bar chart with a peak of 3 patents in 2008.peak 32006: 1 patents20062008: 3 patents20082009: 1 patents20092011: 2 patents20112012: 1 patents2012

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8174221 Motor control apparatus and control apparatus for hybrid electric vehicles Satoru Kaneko, Tatsuyuki Yamamoto, Tokihito Suwa, Yuuichirou Takamune, Kimihisa Furukawa 2012-05-08
8073600 Controller of field winding type synchronous motor, electric drive system, electric four wheel driving vehicle, and hybrid automobile Satoru Kaneko, Shigeru Akaishi, Kazuya Motegi, Tatsuyuki Yamamoto 2011-12-06 $158,000
7990085 Generator control unit Kimihisa Furukawa, Satoru Kaneko, Tokihito Suwa, Yuuichirou Takamune, Satoru Ohno +1 more 2011-08-02 $112,000
7495411 Controller for an electric four-wheel-drive vehicle Satoru Kaneko, Shiho Izumi, Tatsuyuki Yamamoto, Shigeru Akaishi, Yasuo Matsunaga +1 more 2009-02-24
7455133 Electric four-wheel drive vehicle and control unit for same Satoru Kaneko, Tatsuyuki Yamamoto, Masaru Ito, Hisaya Shimizu 2008-11-25 $92,000
7427849 Controller for an electric vehicle and driving apparatus for the electric vehicle Satoru Kaneko, Tatsuyuki Yamamoto, Shigeru Akaishi, Hisao Iino 2008-09-23 $305,000
7317295 Electric motor driving system, electric four-wheel drive vehicle, and hybrid vehicle Shiho Izumi, Satoru Kaneka, Tatsuyuki Yamamoto, Kazuya Motegi, Hideki Miyazaki 2008-01-08 $396,000
7151355 Electric motor driving system, electric four-wheel drive vehicle, and hybrid vehicle Shiho Izumi, Satoru Kaneko, Tatsuyuki Yamamoto, Kazuya Motegi, Hideki Miyazaki 2006-12-19 $173,000