The patent of manufacturing platelets from adipose tissue-derived mesenchymal stem cell, which was invented by Yumiko Matsubara (associate professor at the Clinical and Translational Research Center, School of Medicine), Yasuo Ikeda (the former Dean of School of Medicine, Keio University), et al. and was filed by AdipoSeeds, was registered both in Japan (No. 6425308) and in the US (No. 10,113,147).