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USPTO Patent Rankings Data through Dec 31, 2025
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Masako Mizugami — 4 Patents

COCombi: 4 patents #39 of 161Top 25%
Tokyo, JP: #30,468 of 90,295 inventorsTop 35%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Masako Mizugami has been granted 4 US patents while listed as an inventor at Combi. The first was granted in 1982 and the most recent in March 1983. Masako Mizugami ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Masako Mizugami in Tokyo, JP.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
D268193 Toy animal Shinroku Nakao, Yoshiyasu Ishii 1983-03-08
D265749 Toy rattle Shinroku Nakao, Yoshiyasu Ishii 1982-08-10
D265665 Rattle toy Shinroku Nakao, Yoshiyasu Ishii 1982-08-03
D264630 Teething toy Shinroku Nakao, Yoshiyasu Ishii 1982-05-25