Information Transmission Support System, PAT.5833376(JPN)
KWM, ®︎5375268 (JPN)
Information Transmission Support System Using Images, PAT Pending 2018-001894(JPN)
Information Relay Model and Preparation Methodology, PAT Pending 2004-177198(JPN)
Occupational Health Marketing (JPN), Doosub Jahng, JISHA, 2002, ISBN 978-4-8059-0814-3 (4-8059-0814-9)
Three Fundamentals of Efficient Worklife in Team (JPN), Doosub Jahng, JISHA, 2003, ISBN 978-4-8059-0896-9 (4-8059-0896-3)