Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Chiharu Kitajima — 2 Patents

OCOtsuka Pharmaceutical Co.: 2 patents #437 of 1,273Top 35%
Tokushima, JP: #549 of 1,059 inventorsTop 55%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Chiharu Kitajima has been granted 2 US patents while listed as an inventor at Otsuka Pharmaceutical Co.. The first was granted in 2010 and the most recent in January 2013. Chiharu Kitajima ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Chiharu Kitajima in Tokushima, JP.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
8362252 Carbostyril compound Takeshi Kuroda, Takahito Yamauchi, Tomoichi Shinohara, Kunio Oshima, Hitoshi Nagao +6 more 2013-01-29
7777038 Carbostyril compound Takeshi Kuroda, Takahito Yamauchi, Tomoichi Shinohara, Kunio Oshima, Hitoshi Nagao +6 more 2010-08-17