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

Ryuchi Kojima — 3 Patents

Canon: 3 patents #11,284 of 19,416Top 60%
Tokyo, JP: #36,070 of 90,295 inventorsTop 40%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Ryuchi Kojima has been granted 3 US patents while listed as an inventor at Canon. The first was granted in 2002 and the most recent in January 2011. Ryuchi Kojima ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Ryuchi Kojima in Tokyo, JP.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7862164 Ink jet recording apparatus and recording method therefor Kouhei Ishikawa, Hideaki Kishida, Mitsuhiro Mukasa, Kenichi Tsuburaya, Hirotaka Okuwaki +1 more 2011-01-04 $125,000
7731320 Ink jet recording apparatus and recording method therefor Kouhei Ishikawa, Hideaki Kishida, Mitsuhiro Mukasa, Kenichi Tsuburaya, Hirotaka Okuwaki +1 more 2010-06-08 $158,000
6471351 Ink jet recording apparatus and recording method therefor Kouhei Ishikawa, Hideaki Kishida, Mitsuhiro Mukasa, Kenichi Tsuburaya, Hirotaka Okuwaki +1 more 2002-10-29 $65,000