MD

Masafumi Doi

Sumitomo Electric Industries: 2 patents #687 of 3,885Top 20%
📍 Daito, JP: #6 of 48 inventorsTop 15%
Overall (2003): #54,271 of 273,478Top 20%
2
Patents 2003

Issued Patents 2003

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6657893 Nonvolatile semiconductor memory device and method for driving the same Keita Takahashi, Hiroyuki Doi, Nobuyuki Tamura, Yasushi Okuda 2003-12-02
6583453 Semiconductor device having a voltage-regulator device Hirotsugu Honda 2003-06-24