MO

Masumi Ohta

SO Sony: 8 patents #5,352 of 25,231Top 25%
Overall (All Time): #668,742 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5579294 Magneto-optical medium and recording and/or reproducing apparatus thereof Isamu Nakao, Toshiki Udagawa, Atsushi Fukumoto, Shunji Yoshimura 1996-11-26
5513167 Optical recording apparatus Toshiki Udagawa, Shunji Yoshimura 1996-04-30
5380573 Optical recording medium Atsushi Fukumoto, Toshiki Udagawa, Shunji Yoshimura, Masumi Ono, Kouichi Yasuda 1995-01-10
5265074 Magneto-optical recording medium Isamu Nakao, Katsuhisa Aratani 1993-11-23
5241520 System and method of reproducing signals recorded on a magneto-optic recording medium Katsuhisa Aratani, Isamu Nakao 1993-08-31
5230930 Method of fabricating a high-density magnetooptic recording medium Katsuhisa Aratani, Masahiko Kaneko, Isamu Nakao 1993-07-27
5218581 Magneto-optical recording medium and method for reproducing signal using an external magnetic field from such a medium Katsuhisa Aratani 1993-06-08
5168482 Magnetooptical recording and playback method employing multi-layer recording medium with record holding layer and playback layer Katsuhisa Aratani, Atsushi Fukumoto 1992-12-01