Patent Surveys in Quantum Cryptography (2016) - (342 set as of 2015-06-24)
Key words: quantum cryptography, quantum key distribution, and QKD (full report at: www.ebooks.in.th/ebook/41869/)
IPC & Countries
- International Patent Code PC - H04L000908 is the highest (Key distribution).
US is the top, Japan is the 3rd meanwhile China is mostly appeared in WO category (filed in Chinese language)
Assignees & Inventors
MagiQ Tech (US) is the top assignee. But no dominant inventor !
Not clear, then there is a plenty of room - go !