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USPTO Patent Rankings Data through Sept 30, 2025
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Ryuta Kutsumizu — 2 Patents in 2021

KAKaneka: 2 patents #6 of 140Top 5%
Overall (2021): #117,055 of 548,734Top 25%
2 Patents 2021

Issued Patents 2021

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11015033 Expandable styrene resin particles, pre-expanded particles of styrene resin, styrene resin foam molded body, and method for producing expandable resin particles Shotaro Maruhashi, Ryoji Nakayama, Yoshihito Yano, Kirito Suzuki 2021-05-25
10941265 Polypropylene-type resin pre-expanded particles, and method for producing said pre-expanded particles Ryoji Nakayama 2021-03-09