Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Masatoshi Wakagi — 41 Patents

Hitachi: 31 patents #867 of 28,497Top 4%
Panasonic: 7 patents #3,858 of 21,108Top 20%
JDJapan Display: 5 patents #516 of 1,204Top 45%
HDHitachi Displays: 3 patents #305 of 752Top 45%
HCHitachi Chemical Company: 2 patents #701 of 1,946Top 40%
TTTokyo Institute Of Technology: 2 patents #232 of 1,159Top 25%
HDHitachi Power Semiconductor Device: 1 patents #36 of 79Top 50%
Hitachi, JP: #60 of 2,929 inventorsTop 3%
Overall (All Time): #75,001 of 4,157,543Top 2%
41 Patents All Time
Masatoshi Wakagi has been granted 41 US patents while listed as an inventor at Hitachi. The first was granted in 1991 and the most recent in November 2020. Masatoshi Wakagi ranks #75,001 of 4,157,543 US inventors in our database (top 1.8%). Patent records list Masatoshi Wakagi in Hitachi, JP.

Patents per Year

Patents granted per year, 1991 to 2020Bar chart with a peak of 4 patents in 2006.peak 41991: 1 patents19911993: 2 patents1998: 1 patents1999: 1 patents19992001: 3 patents2002: 2 patents2003: 3 patents20032004: 3 patents2006: 4 patents2007: 1 patents20072008: 3 patents2009: 3 patents2010: 2 patents20102011: 2 patents2012: 2 patents2013: 1 patents20132014: 1 patents2015: 1 patents2017: 1 patents20172018: 2 patents2019: 1 patents2020: 1 patents2020

Issued Patents All Time

Showing 1–25 of 41 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10823992 Liquid crystal display device Kazuhiko Yanagawa, Yasushi Iwakabe, Yoshiaki Nakayoshi 2020-11-03
10466519 Liquid crystal display device Kazuhiko Yanagawa, Yasushi Iwakabe, Yoshiaki Nakayoshi 2019-11-05
10018859 Liquid crystal display device Kazuhiko Yanagawa, Yasushi Iwakabe, Yoshiaki Nakayoshi 2018-07-10
9991336 Semiconductor device, method for manufacturing the same, and power conversion system Taiga Arai, Mutsuhiro Mori, Tomoyasu Furukawa 2018-06-05
9715132 Liquid crystal display device Kazuhiko Yanagawa, Yasushi Iwakabe, Yoshiaki Nakayoshi 2017-07-25
9097922 Liquid crystal display device Kazuhiko Yanagawa, Yasushi Iwakabe, Yoshiaki Nakayoshi 2015-08-04
8885137 Liquid crystal display device Kazuhiko Yanagawa, Yasushi Iwakabe, Yoshiaki Nakayoshi 2014-11-11
8344382 Semiconductor device, manufacturing method thereof, and display apparatus using the semiconductor device Junichi Hanna, Isao Suzumura, Mieko Matsumura, Mutsuko Hatano, Kenichi Onisawa +2 more 2013-01-01
8309960 Display device Yoshiaki Toyota, Mieko Matsumura 2012-11-13 $52,000
8093585 Organic electro-luminescent display apparatus Etsuko Nishimura, Kenichi Onisawa, Mieko Matsumura 2012-01-10 $79,000
8026535 Thin film transistor and organic electroluminescence display using the same Junichi Hanna 2011-09-27 $178,000
7872629 Shift register circuit and display apparatus using the same Susumu Edo, Shinichi Komura 2011-01-18 $109,000
7738069 Liquid crystal display device Kazuhiko Yanagawa, Yasushi Iwakabe, Yoshiaki Nakayoshi 2010-06-15 $66,000
7655947 Thin film transistor used as a switching element in an active matrix type liquid crystal display device Masahiko Ando, Masahiro Kawasaki 2010-02-02 $82,000
7595784 Liquid crystal display apparatus with control of LCD and backlight corresponding to an image Tsunenori Yamamoto, Daisuke Kajita, Ikuo Hiyama, Akitoyo Konno, Tatsuki Inuzuka 2009-09-29 $112,000
7542121 Liquid crystal display device Kazuhiko Yanagawa, Yasushi Iwakabe, Yoshiaki Nakayoshi 2009-06-02 $83,000
7521716 Electrode substrate, thin-film transistor, display and its production method Masahiko Ando, Masaya Adachi, Hiroshi Sasaki 2009-04-21 $88,000
7407846 Thin film transistor, display device and their production Masahiko Ando, Hiroshi Sasaki 2008-08-05 $241,000
7394095 Electrode substrate, thin film transistor, display device and their production Masahiko Ando, Masaya Adachi, Hiroshi Sasaki 2008-07-01 $263,000
7382432 Liquid crystal display device Kazuhiko Yanagawa, Yasushi Iwakabe, Yoshiaki Nakayoshi 2008-06-03 $268,000
7202496 Thin film transistor, display device and their production Masahiko Ando, Hiroshi Sasaki 2007-04-10 $231,000
7145176 Active matrix display device Masahiro Kawasaki, Masahiko Ando 2006-12-05 $124,000
7112500 Thin film transistor, liquid crystal display and manufacturing method thereof Masahiko Ando, Masahiro Kawasaki 2006-09-26 $145,000
7102155 Electrode substrate, thin film transistor, display device and their production Masahiko Ando, Masaya Adachi, Hiroshi Sasaki 2006-09-05 $179,000
7045816 Liquid crystal display apparatus Shingo Ishihara, Masahiko Ando 2006-05-16 $99,000