MM

Masakazu Muroyama

SO Sony: 27 patents #1,364 of 25,231Top 6%
Overall (All Time): #145,417 of 4,157,543Top 4%
27
Patents All Time

Issued Patents All Time

Showing 26–27 of 27 patents

Patent #TitleCo-InventorsDate
5028497 Magnetic recording medium utilizing a fungicide Masashi Somezawa 1991-07-02
4656089 Magnetic recording medium Yoshinobu Ninomiya, Masayoshi Sugiyama, Akira Hashimoto 1987-04-07