HT

Haruka Takai

PK Pentel Kabushiki Kaisha: 1 patents #76 of 170Top 45%
Overall (All Time): #2,593,562 of 4,157,543Top 65%
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Patent #TitleCo-InventorsDate
11697743 Ink composition, writing instrument and method for producing ink composition Sachiko Onuki, Kiyonori Yasuike, Hiroyuki Saitou 2023-07-11