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USPTO Patent Rankings Data through Dec 31, 2025
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Masako Hirota — 2 Patents

Pfizer: 2 patents #2,085 of 5,153Top 45%
Miyoshi, JP: #997 of 2,464 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Masako Hirota has been granted 2 US patents while listed as an inventor at Pfizer. The first was granted in 2007 and the most recent in April 2008. Masako Hirota ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Masako Hirota in Miyoshi, JP.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7354925 Alpha aryl or heteroaryl methyl beta piperidino propanamide compounds as ORL1-receptor antagonists Yoshinobu Hashizume, Sachiko Mihara, Hisoshi Nakamura, Hiroki Koike, Yukari Matsumoto 2008-04-08 $140,126,000
7279486 Alpha aryl or heteroaryl methyl beta piperidino propanoic acid compounds as ORL1-receptor antagonists Yoshinobu Hashizume, Sachiko Mihara, Hiroshi Nakamura, Hiroki Koike, Yukari Matsumoto 2007-10-09 $351,314,000