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

Akihiro Fujiwara — 79 Patents

Canon: 65 patents #395 of 19,416Top 3%
Kabushiki Kaisha Toshiba: 4 patents #6,732 of 21,451Top 35%
Mazda Motor: 4 patents #991 of 4,755Top 25%
Samsung: 2 patents #38,282 of 75,807Top 55%
OCOmron Automotive Electronics Co.: 1 patents #98 of 186Top 55%
NDNtt Docomo: 1 patents #1,030 of 1,706Top 65%
FLFujitsu Ten Limited: 1 patents #456 of 996Top 50%
Overall (All Time): #23,150 of 4,157,543Top 1%
79 Patents All Time
Akihiro Fujiwara has been granted 79 US patents while listed as an inventor at Canon. The first was granted in 1986 and the most recent in September 2025. Akihiro Fujiwara ranks #23,150 of 4,157,543 US inventors in our database (top 0.56%). Patent records list Akihiro Fujiwara in Toride, MH, JP.

Patents per Year

Patents granted per year, 1989 to 2025Bar chart with a peak of 5 patents in 1993.peak 51989: 2 patents19891990: 1 patents1991: 3 patents1992: 2 patents19921993: 5 patents1994: 2 patents1995: 4 patents19951996: 1 patents1997: 5 patents1998: 2 patents19982000: 3 patents2001: 3 patents2003: 3 patents20032004: 1 patents2006: 3 patents2007: 2 patents20072009: 2 patents2013: 1 patents2014: 3 patents20142015: 2 patents2016: 2 patents2017: 4 patents20172018: 2 patents2019: 2 patents2020: 2 patents20202021: 3 patents2022: 2 patents2023: 1 patents20232024: 2 patents2025: 2 patents2025

Issued Patents All Time

Showing 1–25 of 79 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12429811 Cartridge and image forming apparatus Naoki Matsumaru, Ryuta Murakami, Tadashi Horikawa, Akinobu Hirayama, Daisuke Makiguchi +5 more 2025-09-30
12287600 Drum unit, drive transmission unit, cartridge and electrophotographic image forming apparatus Ryuta Murakami 2025-04-29
12072664 Cartridge and image forming apparatus Naoki Matsumaru, Ryuta Murakami, Tadashi Horikawa 2024-08-27
12025941 Drum unit, drive transmission unit, cartridge and electrophotographic image forming apparatus Ryuta Murakami 2024-07-02
11703794 Cartridge and image forming apparatus Naoki Matsumaru, Ryuta Murakami, Tadashi Horikawa 2023-07-18
11449001 Cartridge and image forming apparatus Tadashi Horikawa, Naoki Matsumaru, Ryuta Murakami, Daisuke Makiguichi 2022-09-20 $40,000
11274834 Heat exchanger and air conditioner having the same Sang Mu Lee, Hyun-Young Kim 2022-03-15
11125505 Heat exchanger and air conditioner including the same Sang Mu Lee, Hyun-Young Kim 2021-09-21
10981516 Vehicle speaker disposition structure Yuki KATAOKA, Hidenori Matsuoka, Takeshi Nakamura, Kiyoshi Mutsura, Yoshihiro Teshima +2 more 2021-04-20 $405,000
10962927 Cartridge and imaging forming apparatus Tadashi Horikawa, Naoki Matsumaru, Ryuta Murakami, Daisuke Makiguichi 2021-03-30 $46,000
10627780 Cartridge and image forming apparatus Tadashi Horikawa, Naoki Matsumaru, Ryuta Murakami, Daisuke Makiguchi 2020-04-21 $26,000
D873341 Process cartridge for image forming apparatus Tadashi Horikawa, Noriyuki Komatsu, Naoki Matsumaru, Ryuta Murakami, Daisuke Makiguchi +2 more 2020-01-21
10452002 Developing device Naoki Maeda, Daisuke Makiguchi 2019-10-22 $25,000
10261443 Developer container, developing apparatus, process cartridge and image forming apparatus Tsukasa Abe 2019-04-16 $25,000
10048622 Developer container, development device, process cartridge, and image forming apparatus Tsukasa Abe, Tatsuro Harada 2018-08-14 $36,000
9927737 Developing apparatus and process cartridge Nobuyoshi Yoshida, Shuhei Kawasaki, Hideki Kakuta 2018-03-27 $31,000
9811025 Developer container, development device, process cartridge, and image forming apparatus Tsukasa Abe, Tatsuro Harada 2017-11-07 $40,000
9642242 Power conversion apparatus Yusaku Ido, Takashi Yamada 2017-05-02
9599955 Developer storage unit, development device, process cartridge, and electrophotographic image forming apparatus Kuniaki Hirukawa, Yu Fukasawa 2017-03-21 $25,000
9594342 Developer container, developing apparatus, process cartridge, image forming apparatus, and apparatus main body of image forming apparatus Yuuki Nakamura 2017-03-14 $32,000
9361000 Information display device for vehicle Aya Furue, Keiichirou Yamamoto 2016-06-07 $378,000
9342047 Movement limiting apparatus for image forming apparatus process cartridge Osamu Anan 2016-05-17 $31,000
9188945 Cartridge and image forming apparatus Osamu Anan 2015-11-17 $46,000
9110439 Cartridge having a grip provided on a frame Susumu Nittani, Masato Tanabe 2015-08-18 $36,000
8886109 Cleaning unit, process cartridge, and electrophotographic image forming apparatus Kazuo Chadani, Susumu Nittani, Masato Tanabe, Hideki Kakuta, Keisuke Nomura 2014-11-11 $32,000