TERMINAL DEVICE, KEY DISTRIBUTION MANAGEMENT DEVICE, SERVER-CLIENT SYSTEM, COMMUNICATION… Application WO-2017221723-A1 World Intellectual Property Organisation (WIPO) 28 Dec 2017
KEY GENERATION DEVICE, KEY GENERATION PROGRAM, CONCEALED DATA SEARCH SYSTEM, AND KEY… Application WO-2014109066-A1 World Intellectual Property Organisation (WIPO) 17 Jul 2014
DATA SEARCH DEVICE, DATA SEARCH METHOD, DATA SEARCH PROGRAM, DATA REGISTRATION DEVICE… Application WO-2013111284-A1 World Intellectual Property Organisation (WIPO) 01 Aug 2013