Engineering Data Management System (EDMS) for computer aided design of digital computers. - Masakazu Soga; Chiyozi Tanaka; Kinya Tabuchi; Katsuhiko Seo; Michiko Kunioka; Hiroo Tsuji (DAC, 1974)

A High Speed Database Machine: HDM. - Shunichiro Nakamura; Harumi Minemura; Tatsuo Minohara; Kuniji Itakura; Masakazu Soga (IWDM, 1987)

A fault-tolerant combinational circuit with fault diagnosis capability - To mask and detect the loss of any one connection between gate circuits. - Masakatsu Nishigaki; Makoto Nakano; Masakazu Soga (Syst. Comput. Jpn., 2003)