Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Akira Iizuka — 50 Patents

Yamaha: 16 patents #126 of 2,001Top 7%
HSHitachi Automotive Systems: 7 patents #226 of 1,636Top 15%
NCNippon Light Metal Company: 4 patents #52 of 499Top 15%
NSNippon Steel: 4 patents #672 of 4,423Top 20%
Sumitomo Electric Industries: 3 patents #7,735 of 21,551Top 40%
Panasonic: 3 patents #7,659 of 21,108Top 40%
KKKureha Kagaku Kogyo: 3 patents #178 of 607Top 30%
RTRenesas Technology: 2 patents #1,374 of 3,337Top 45%
ILIsuzu Motors Limited: 2 patents #255 of 908Top 30%
Kabushiki Kaisha Toshiba: 1 patents #13,641 of 21,451Top 65%
NSNippon Gakki Seizo: 1 patents #163 of 332Top 50%
SPShizuoka Prefecture: 1 patents #14 of 58Top 25%
HAHitachi Astemo: 1 patents #649 of 1,276Top 55%
Shizuoka, JP: #152 of 6,644 inventorsTop 3%
Overall (All Time): #53,743 of 4,157,543Top 2%
50 Patents All Time
Akira Iizuka has been granted 50 US patents while listed as an inventor at Yamaha. The first was granted in 1986 and the most recent in February 2024. Akira Iizuka ranks #53,743 of 4,157,543 US inventors in our database (top 1.3%). Patent records list Akira Iizuka in Shizuoka, JP.

Patents per Year

Patents granted per year, 1986 to 2024Bar chart with a peak of 3 patents in 2003.peak 31986: 2 patents19861987: 2 patents1988: 1 patents1990: 1 patents19901991: 1 patents1992: 2 patents1993: 2 patents19931994: 2 patents1997: 1 patents1998: 1 patents19981999: 2 patents2000: 2 patents2001: 1 patents20012003: 3 patents2004: 2 patents2006: 3 patents20062007: 2 patents2008: 1 patents2009: 3 patents20092010: 1 patents2011: 2 patents2017: 2 patents20172019: 3 patents2020: 2 patents2021: 2 patents20212022: 3 patents2024: 1 patents2024

Issued Patents All Time

Showing 1–25 of 50 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11914285 Pellicle frame body for flat panel display, and method for manufacturing same Naoto KOMURA, Koichi Nakano 2024-02-27 $194,000
11433141 Anti-B7-H4 antibody Yasuto Akiyama 2022-09-06
11293371 Fuel injection control device Kotaro Oki, Osamu Mukaihara, Fumihiro Itaba 2022-04-05
11236697 Fuel injection control device and fuel injection control method Fumihiro Itaba, Osamu Mukaihara 2022-02-01
11098669 Internal combustion engine control device Osamu Mukaihara, Koichi TSUKIO, Takanori Umeki 2021-08-24
10995655 Fuel injection device Tohru Ishikawa, Takao Miyake, Kazuki Yoshimura 2021-05-04
10823102 Control device for fuel injection valve Fumihiro Itaba, Osamu Mukaihara, Akiyasu MIYAMOTO 2020-11-03
10815949 Fuel injection device Yoshihito Yasukawa, Kiyotaka Ogura, Takao Miyake, Kazuki Yoshimura, Akiyasu MIYAMOTO 2020-10-27
10437142 Support frame for pellicle Koichi Nakano, Hayato Kiyomi, Kazuhiro Oda, Tomohiro Isobe 2019-10-08
10415527 Fuel injection valve Takao Miyake, Atsushi Nakai, Kiyotaka Ogura 2019-09-17
10378496 Fuel injection valve Akiyasu MIYAMOTO, Motoyuki Abe, Yoshihito Yasukawa, Takao Miyake, Kiyotaka Ogura 2019-08-13
9599889 Method for manufacturing support frame for pellicle, support frame for pellicle, and pellicle Takayuki Yamaguchi, Yoshihiro Taguchi 2017-03-21
9598790 Pellicle frame and process for manufacturing same Yoshihiro Taguchi, Takayuki Yamaguchi, Shingo Koizumi, Kiyokazu Koga, Masato Yatsukura 2017-03-21
7896200 Liquid substance supplying device Hachiro Nakatsuji, Akira Kabeshita 2011-03-01 $76,000
7885718 Component mounting apparatus, service providing device and servicing method Toshio Yano, Hiroshi Okamura, Yoshihiko Misawa, Yoshinori Isobata, Ken Takahashi +2 more 2011-02-08 $83,000
7823378 Method of controlling exhaust gas purification system, and exhaust gas purification system Naomi Uchida, Minoru Tsuchida, Tatsuo Mashiko 2010-11-02
7536236 Component mounting apparatus, service providing device and servicing method Toshio Yano, Hiroshi Okamura, Yoshihiko Misawa, Yoshinori Isobata, Ken Takahashi +2 more 2009-05-19 $325,000
7518659 Video mixer apparatus Hiroyuki Iwase 2009-04-14
7476796 Image controlling apparatus capable of controlling reproduction of image data in accordance with event Hiroyuki Iwase 2009-01-13
7384834 Semiconductor device and a method of manufacturing the same Katsuhiro Mitsuda, Mitsuharu Honda 2008-06-10 $239,000
7221852 Motion picture playback apparatus and motion picture playback method Hiroyuki Iwase, Kazuhiko Shuto 2007-05-22
7168244 Control method for an exhaust gas purification system and an exhaust gas purification system Naomi Uchida, Hitoshi Sato, Tatsuo Mashiko, Minoru Tsuchida 2007-01-30
7142939 Component mounter, service supplier, and service supplying method Satoshi Nonaka, Hitoshi Nakamura, Yoshiyuki Hattori, Toshio Yano, Hiroshi Okamura +5 more 2006-11-28 $351,000
7087474 Semiconductor device and a method of manufacturing the same Katsuhiro Mitsuda, Mitsuharu Honda 2006-08-08 $131,000
7019788 Video mixer apparatus Hiroyuki Iwase 2006-03-28