J. Sakata

The Analysis of Research and Development Efficiency in Japanese Companies in the Field of Fuel Cells Using Patent Data

Jun Hosoya, Junichi Sakata, J. Sakata, 2009 .

Business method patent strategy portfolios; analysis of the Japanese main information providers

J. Sakata, 2012 .

Innovation Position: A Quantitative Analysis to Evaluate the Efficiency of Research  and Development on the Basis of Patent Data

Katsuhiro Suzuki, Junichi Sakata, Jun Hosoya, 2008, Proceedings of the 41st Annual Hawaii International Conference on System Sciences (HICSS 2008).