Partial year: Data through Q3 2025 (Sept 30). Full-year totals not yet available.

Hirotsugu IWASAKI

SH Sumitomo Electric Hardmetal: 1 patents #40 of 73Top 55%

Sumitomo Electric Industries: 1 patents #196 of 538Top 40%

📍 Kasai, JP: #148 of 426 inventorsTop 35%

Overall (2025): #369,661 of 469,880Top 80%

Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
12404570	Diamond sintered material and tool including diamond sintered material	Akihiko Ueda, Michiko Matsukawa, Satoru Kukino	2025-09-02