YY

Yuzo Yamakawa

Pioneer: 3 patents #574 of 1,730Top 35%
Pioneer Electronic: 1 patents #1,093 of 1,840Top 60%
Overall (All Time): #1,016,304 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
8097323 Optical recording medium Takayuki Shima, James Paul Fons, Junji Tominaga 2012-01-17
6970307 Optical near-field generating element and optical apparatus including the same Satoshi Sugiura 2005-11-29
6848115 Optical recording medium using scattering bodies to enhance modulation Satoshi Sugiura, Akihiro Tachibana 2005-01-25
6839191 Optical near-field generating element and optical apparatus including the same Satoshi Sugiura 2005-01-04
5337301 Optical recording medium, apparatus for reproducing the same and method of recording and reproducing the same Satoshi Sugiura 1994-08-09