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USPTO Patent Rankings Data through Dec 31, 2025
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Kejun Fan — 2 Patents

JSJsr: 2 patents #443 of 1,137Top 40%
Tokyo, JP: #44,108 of 90,295 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Kejun Fan has been granted 2 US patents while listed as an inventor at Jsr. The first was granted in 2004 and the most recent in October 2007. Kejun Fan ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Kejun Fan in Tokyo, JP.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7282540 Process for producing particles for diagnostic reagent Ichirou Ozaki, Satoshi Katayose, Mikio Hikata, Mitsuhiro Murata 2007-10-16
6797782 Process for producing particles for diagnostic reagent Ichiro Ozaki, Satoshi Katayose, Mikio Hikata, Mitsuhiro Murata 2004-09-28

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