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

Ken Yokoyama — 65 Patents

Fujitsu Limited: 38 patents #487 of 24,456Top 2%
Canon: 18 patents #3,699 of 19,416Top 20%
OLOlympus: 5 patents #926 of 3,097Top 30%
JAJapan Science And Technology Agency: 1 patents #756 of 2,171Top 35%
JSJsr: 1 patents #649 of 1,137Top 60%
TCToppan Printing Co.: 1 patents #691 of 1,467Top 50%
Shizuoka, JP: #87 of 6,644 inventorsTop 2%
Overall (All Time): #33,516 of 4,157,543Top 1%
65 Patents All Time
Ken Yokoyama has been granted 65 US patents while listed as an inventor at Fujitsu Limited. The first was granted in 1999 and the most recent in January 2025. Ken Yokoyama ranks #33,516 of 4,157,543 US inventors in our database (top 0.81%). Patent records list Ken Yokoyama in Shizuoka, JP.

Patents per Year

Patents granted per year, 1999 to 2025Bar chart with a peak of 7 patents in 2012.peak 71999: 2 patents19992000: 2 patents2001: 1 patents2003: 1 patents20032004: 1 patents2006: 2 patents2007: 1 patents20072008: 3 patents2009: 2 patents2011: 2 patents20112012: 7 patents2013: 5 patents2014: 3 patents20142015: 4 patents2016: 1 patents2017: 2 patents20172019: 5 patents2020: 7 patents2021: 6 patents20212022: 4 patents2023: 3 patents2025: 1 patents2025

Issued Patents All Time

Showing 1–25 of 65 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12210301 Image forming apparatus Masaru Tsukada, Hiroto Hasegawa 2025-01-28
11762315 Image forming apparatus that improves contact member durability and suppresses occurrence of cleaning failure Shuji Saito, Koujirou Izumidate 2023-09-19
11637764 Abnormality detection method and a non-transitory computer-readable storage medium for storing abnormality detection program Takeshi Kodama 2023-04-25
11540854 Ultrasonic probe, ultrasonic treatment instrument, and ultrasonic treatment assembly Ken Fujisaki, Takamitsu Sakamoto, Yasuyuki Matsumura, Hideto Yoshimine 2023-01-03
11446051 Ultrasonic vibration transmittable probe and ultrasonic treatment assembly Ken Fujisaki, Takamitsu Sakamoto, Hideto Yoshimine 2022-09-20
11378901 Image forming apparatus capable of suppressing maldistribution of an ion conductive agent on an intermediary transfer member Yusaku Iwasawa, Yasutaka Yagi, Hiroyuki Seki 2022-07-05 $39,000
11334014 Image forming apparatus Yasutaka Yagi 2022-05-17 $36,000
11246620 Ultrasonic surgical instrument 2022-02-15
11169473 Image forming apparatus with image bearing member and a belt that contact each other to form a wound area by urging a transfer member toward the image bearing member Hiroyuki Seki 2021-11-09 $43,000
11169472 Image forming apparatus that improves contact member durability and suppresses occurrence of cleaning failure Shuji Saito, Koujirou Izumidate 2021-11-09 $43,000
11022922 Image forming apparatus and intermediate transfer member Shuji Saito, Seiji Nakahara, Hiroshi Kita, Koujirou Izumidate, Kazushi Ino 2021-06-01 $42,000
10977108 Influence range specifying method, influence range specifying apparatus, and storage medium Reiko Kondo, Yukihiro Watanabe, Hiroshi Otsuka, Masahiro Asaoka 2021-04-13
10945754 Ultrasound device Ken Fujisaki, Takamitsu Sakamoto, Michio Takayama, Hideto Yoshimine, Ryo MIYASAKA 2021-03-16
10942763 Operation management apparatus, migration destination recommendation method, and storage medium Junichi Higuchi, Takuto Tsuji 2021-03-09
10868744 Influence range identification method and influence range identification apparatus Reiko Kondo, Hiroshi Otsuka, Yukihiro Watanabe, Masahiro Asaoka 2020-12-15
10833921 Information processing apparatus and abnormality diagnosis method Junichi Higuchi 2020-11-10
10771232 Information processing apparatus, time synchronization method, and computer-readable recording medium recording time synchronization program Takashi Shimizu, Hiroshi Murakawa 2020-09-08
10691057 Image forming apparatus Taisuke Minagawa, Yasuharu Hirado 2020-06-23 $31,000
10664340 Failure analysis program, failure analysis device, and failure analysis method Hiroshi Otsuka, Yukihiro Watanabe, Masahiro Asaoka, Reiko Kondo 2020-05-26
10617466 Treatment instrument and treatment system 2020-04-14
10527972 Image forming apparatus Shuji Saito, Noriaki Egawa, Koujirou Izumidate, Masatsugu Toyonori 2020-01-07 $26,000
10496930 Apparatus and method to determine a distribution destination of a message based on a probability of co-occurrence of words included in distributed messages Yukihiro Watanabe, Masahiro Asaoka, Hiroshi Otsuka, Reiko Kondo 2019-12-03
10318371 Apparatus and method to determine a setting item causing an incident based on action records therefor Hiroshi Otsuka, Yukihiro Watanabe 2019-06-11
10289036 Image forming apparatus Hiroyuki Kadowaki, Kuniaki Kasuga, Shuichi Tetsuno 2019-05-14 $22,000
10275457 Information processing apparatus and control method for information processing apparatus Masahiro Asaoka, Yukihiro Watanabe, Hiroshi Otsuka, Reiko Kondo 2019-04-30