Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Nobuyuki Kurusu — 4 Patents

EIEisai: 3 patents #344 of 998Top 35%
ECEisai R&D Management Co.: 1 patents #478 of 817Top 60%
Ibaraki, JP: #2,228 of 6,779 inventorsTop 35%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Nobuyuki Kurusu has been granted 4 US patents while listed as an inventor at Eisai. The first was granted in 2003 and the most recent in August 2012. Nobuyuki Kurusu ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Nobuyuki Kurusu in Ibaraki, JP.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
8252810 Bicycloamine derivatives Fumihiro Ozaki, Motohiro Soejima, Tasuku Ishida, Yoshihiko Norimine, Eriko Doi +4 more 2012-08-28
7112593 N-aryl-substituted cyclic amine derivative and medicine containing the same as active ingredient Toshimi Okada, Keigo Tanaka, Seiji Yoshikawa, Daisuke Shinmyo, Nobuhisa Watanabe +5 more 2006-09-26
6906072 Piperazine compound and pharmaceutical composition containing the compound Noboru Yamamoto, Yuichi Suzuki, Manami Kimura, Tetsuhiro Niidome, Yoichi Iimura +6 more 2005-06-14
6599917 Quinuclidine compounds and drugs containing the same as the active ingredient Toshimi Okada, Keigo Tanaka, Kazuki Miyazaki, Daisuke Shinmyo, Hiroyuki Sugumi +5 more 2003-07-29