HS

Hiroyoshi Sekiguchi

Ricoh Company: 4 patents #201 of 1,683Top 15%
Overall (2011): #27,418 of 364,097Top 8%
4
Patents 2011

Issued Patents 2011

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
8084113 Multi-layered phase-change optical recording medium Michiaki Shinotsuka, Masaru Shinkai, Masaki Kato 2011-12-27
8034426 Two-layered optical recording medium Masaru Shinkai, Michiaki Shinotsuka, Masaki Kato 2011-10-11
8000198 Phase-change type optical recording medium and reproduction method and apparatus for such a recording medium Michiaki Shinotsuka, Masaru Shinkai, Eiko Hibino, Masaki Kato, Katsuyuki Yamada +1 more 2011-08-16
7894315 Optical disk, recording method, recording medium, and optical disk unit, for recording information on multilayer optical disk Masaki Kato, Katsuyuki Yamada, Kazunori Ito, Michiaki Shinotsuka, Eiko Hibino +1 more 2011-02-22