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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Masashi Kunitake — 2 Patents

CHChisso: 1 patents #468 of 833Top 60%
NTNara Institute Of Science And Technology: 1 patents #13 of 65Top 20%
Kumamoto, JP: #536 of 1,221 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Masashi Kunitake has been granted 2 US patents while listed as an inventor at Chisso. All of these patents were granted in 2004. Masashi Kunitake ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Masashi Kunitake in Kumamoto, JP.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6716373 Optically active polysilane, optically active film, and method of controlling optical characteristics of solid thin film Michiya Fujiki, Akihiro Ohira 2004-04-06
6699386 Endotoxin adsorbent, and a method of removing endotoxin by using the same Masami Todokoro, Chuichi Hirayama, Masayo Sakata 2004-03-02