HW

Hirofumi Watanabe

MA Mitsui Kinzoku Act: 1 patents #2 of 10Top 20%
MC Mitsui Mining & Smelting Co.: 1 patents #16 of 51Top 35%
Ricoh Company: 1 patents #810 of 1,683Top 50%
Overall (2011): #47,521 of 364,097Top 15%
3
Patents 2011

Issued Patents 2011

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
8037639 Door opening/closing device Takuya Kakumae, Kazuhito Yokomori, Nobuo Sugawara 2011-10-18
8007027 Door operating apparatus, electromagnetic clutch, and coupling mechanism Takuya Kakumae 2011-08-30
7934429 Stress-distribution detecting semiconductor package group and detection method of stress distribution in semiconductor package using the same Naohiro Ueda 2011-05-03