TW

Tetsu Watanabe

SO Sony: 5 patents #63 of 2,482Top 3%
Overall (2004): #7,037 of 270,089Top 3%
5
Patents 2004

Issued Patents 2004

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
6825995 Optical device, optical system, method of production of same, and mold for production of same Masahiro Yamada, Akira Kouchiyama 2004-11-30
6785222 Read-only optical recording medium and disc cartridge Naohiro Netsu, Yoshitaka Aoki, Kazuhiko Fujiie, Yasuaki Maeda, Takuya Kaeriyama 2004-08-31
6747943 Optical recording medium and disc cartridge Naohiro Netsu, Yoshitaka Aoki, Kazuhiko Fujiie, Yasuaki Maeda, Takuya Kaeriyama 2004-06-08
6717738 Optical element, metal mold for producing optical element and production method for optical element Masahiro Yamada 2004-04-06
6704275 Optical recording medium and disc cartridge having 2 GB capacity Naohiro Netsu, Yoshitaka Aoki, Kazuhiko Fujiie, Yasuaki Maeda, Takuya Kaeriyama 2004-03-09