HF

Hirotsugu Fukuoka

Sumitomo Electric Industries: 2 patents #504 of 3,352Top 20%
HI Hitachi: 1 patents #1,533 of 3,950Top 40%
Overall (2002): #28,938 of 266,432Top 15%
3
Patents 2002

Issued Patents 2002

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6483677 Magnetic disk apparatus including magnetic head having multilayered reproducing element using tunneling effect Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano +14 more 2002-11-19
6450790 Refrigerating cycle or compressor having foreign matter collector 2002-09-17
6447274 Rotary compressor having a cylinder block of sintered metal Hideyuki Horihata, Hiraku Shiizaki, Shigeru Muramatsu 2002-09-10