YU

Yoshio Umeda

Sumitomo Electric Industries: 2 patents #504 of 3,352Top 20%
📍 Kasai, JP: #102 of 660 inventorsTop 20%
Overall (2002): #33,979 of 266,432Top 15%
2
Patents 2002

Issued Patents 2002

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6496323 Information recording/reproducing apparatus and method Hiroshi Kohso, Tatsuhiko Inagaki, Toshiyuki Wada, Makoto Kuwamoto 2002-12-17
6466385 Method and apparatus of forming a magnetic disk with a servo sector and a data sector on a spiral track Ryosuke Shimizu, Syuichi Yoshida, Tatsuaki Ishida, Kiyokazu Tohma, Keizo Miyata 2002-10-15