Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Akiko Doi — 1 Patent

NONof: 1 patents #246 of 561Top 45%
Kawasaki, JP: #10,242 of 15,035 inventorsTop 70%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Akiko Doi has been granted 1 US patent while listed as an inventor at Nof. All of these patents were granted in 2019. Akiko Doi ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Akiko Doi in Kawasaki, JP.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10407543 Method for producing polyethylene glycol having terminal carboxyl group Takashi Ichikawa, Tsuyoshi Takehana, Takuma TSUBUSAKI 2019-09-10