HK

Hidehei Kageyama

KC Kotobuki & Co.: 1 patents #1 of 3Top 35%
ML Mitsubishi Pencil Company, Limited: 1 patents #6 of 29Top 25%
Overall (2024): #161,761 of 561,600Top 30%
2
Patents 2024

Issued Patents 2024

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
12090777 Writing instrument refills and writing instrument Toshikazu Sasaki 2024-09-17
D1010733 Mechanical pencil Hiroaki Kondo, Takaaki Nakata, Tadao Odaka, Takeshi Wakayama 2024-01-09