MT

Masaetsu Takahashi

Ricoh Company: 12 patents #1,888 of 9,818Top 20%
Overall (All Time): #423,308 of 4,157,543Top 15%
12
Patents All Time

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDate
8189449 Multilayer optical information medium and optical information processing apparatus therefor, program product and information medium including the same Toshishige Fujii 2012-05-29
7876657 Information recording apparatus, an information recording system, a program, and a recording medium Ryoichi Suzuki 2011-01-25
6503592 Sputtering target, method of producing the target, optical recording medium fabricated by using the sputtering target, and method of fabricating the optical recording medium Katsuyuki Yamada, Hiroko Iwasaki, Yukio Ide, Makoto Harigaya, Yoshiyuki Kageyama +2 more 2003-01-07
6280684 Sputtering target, method of producing the target, optical recording medium fabricated by using the sputtering target, and method of fabricating the optical recording medium Katsuyuki Yamada, Hiroko Iwasaki, Yukio Ide, Makoto Harigaya, Yoshiyuki Kageyama +2 more 2001-08-28
6127016 Sputtering target, method of producing the target, optical recording medium fabricated by using the sputtering target, and method of fabricating the optical recording medium Katsuyuki Yamada, Hiroko Iwasaki, Yukio Ide, Makoto Harigaya, Yoshiyuki Kageyama +2 more 2000-10-03
5882493 Heat treated and sintered sputtering target Hiroko Iwasaki, Yoshiyuki Kageyama, Makoto Harigaya, Hiroshi Deguchi, Katsuyuki Yamada +2 more 1999-03-16
5785828 Sputtering target for producing optical recording medium Katsuyuki Yamada, Hiroko Iwasaki, Yukio Ide, Makoto Harigaya, Yoshiyuki Kageyama +2 more 1998-07-28
5646924 Recording and simultaneous verifying method of phase-changing type of information recording medium Osamu Nonoyama, Yukio Ide, Makoto Harigaya, Yoshiyuki Kageyama, Hiroshi Deguchi +2 more 1997-07-08
5543945 Method of driving an LCD employing combining two voltages which change polarity at different times in a frame Yuji Kimura, Eiichi Ohta, Hitoshi Kondo, Kenji Kameyama, Katsuyuki Yamada 1996-08-06
5420833 Magneto-optical recording medium having first and second magnetic layers Motoharu Tanaka, Atsuyuki Watada, Hiroshi Deguchi, Toshiaki Tokita, Yoshiko Kurosawa 1995-05-30
5319479 Deposited multi-layer device with a plastic substrate having an inorganic thin film layer Katsuyuki Yamada, Eiichi Ohta, Kenji Kameyama, Hitoshi Kondo, Yuji Kimura +1 more 1994-06-07
5142192 Thin film electroluminescent element Seiichi Oseto, Yoshiyuki Kageyama, Kenji Kameyama, Hiroshi Deguchi 1992-08-25