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

Kiyomichi Ichikawa — 9 Patents

IHIhi: 4 patents #212 of 1,178Top 20%
Canon: 2 patents #12,732 of 19,416Top 70%
Tokyo, JP: #17,063 of 90,295 inventorsTop 20%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
Kiyomichi Ichikawa has been granted 9 US patents while listed as an inventor at Ihi. The first was granted in 1981 and the most recent in August 2021. Kiyomichi Ichikawa ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Kiyomichi Ichikawa in Tokyo, JP.

Patents per Year

Patents granted per year, 1981 to 2021Bar chart with a peak of 2 patents in 1981.peak 21981: 2 patents19811984: 1 patents19841989: 1 patents19891993: 1 patents19932019: 2 patents20192020: 1 patents20202021: 1 patents2021

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11078830 Multi-stage turbocharger Yoshimitsu Matsuyama, Munehiro Yoshida 2021-08-03
10526956 Turbocharger Yuusuke Isono, Atsushi Mori, Yuji Kobayashi, Kazuaki Iwata 2020-01-07
10465599 Turbocharger Yuusuke Isono, Atsushi Mori, Yuji Kobayashi, Kazuaki Iwata 2019-11-05
10408085 Turbocharger Yuusuke Isono, Atsushi Mori, Yuji Kobayashi, Kazuaki Iwata 2019-09-10
5183249 Paper conveyor 1993-02-02
4843560 Cost counter with a cost meter capable of reading stored data 1989-06-27
4473219 Gatherer with binding mechanism for papers discharged from a bin drum 1984-09-25
4299382 Sheet sorting and stacking apparatus 1981-11-10 $6,901,000
4274624 Dual-mode sheet sorting apparatus Tadashi Sato, Shigeru Yoshimura 1981-06-23 $10,802,000