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Hajime Yuzurihara

Ricoh Company: 6 patents #10 of 812Top 2%
Overall (2005): #4,663 of 245,428Top 2%
6
Patents 2005

Issued Patents 2005

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
6963527 Information recording method and optical recording medium therefor Hiroko Ohkura, Yoshiyuki Kageyama, Makoto Harigaya, Eiko Hibino, Hiroshi Miura +1 more 2005-11-08
6958180 Phase change optical recording medium Eiko Hibino, Hiroshi Deguchi, Hiroshi Miura, Mikiko Abe 2005-10-25
6914866 Optical information recording medium and information recording method and apparatus using the recording medium Shinya Narumi, Katsuyuki Yamada, Kazunori Ito, Nobuaki Onagi 2005-07-05
6884487 Optical recording medium, recording material, method of producing optical recording medium, and optical recording, reading and rewriting method Kazunori Ito, Eiko Hibino, Makoto Harigaya, Takashi Shibaguchi, Nobuaki Onagi +3 more 2005-04-26
6846611 Phase-change optical recording medium Kazunori Ito, Nobuaki Onagi, Masaru Shinkai, Eiko Hibino, Hiroko Ohkura +1 more 2005-01-25
6841049 OPTICAL DEVICE SUBSTRATE FILM-FORMATION APPARATUS, OPTICAL DISK SUBSTRATE FILM-FORMATION METHOD, SUBSTRATE HOLDER MANUFACTURE METHOD, SUBSTRATE HOLDER, OPTICAL DISK AND A PHASE-CHANGE RECORDING TYPE OF OPTICAL DISK Kazunori Ito, Katsunari Hanaoka, Hiroshi Deguchi, Nobuaki Onagi, Hiroko Tashiro +5 more 2005-01-11