Chemistry, Semiconductor, Precision Engineering, Information technology

Graduated from the Faculty of Science, Tohoku University (1989)

Completed graduate studies at the Graduate School of Science, Tohoku University (1991)

Worked in production technology development at Ricoh Company, Ltd. (1991–2000)

Served as R&D Manager at a multinational company (2000–2002)

Served as CTO of an intellectual property consulting firm (2002–2004)

Registered as a Japanese Patent Attorney in 2004 (Registration No. 13518)

Worked at patent firms, handling domestic, outbound, and inbound patent matters (2005–2013)

Established Okubo International Patent Firm (2013)

Started working with Takino, Kawasaki & Associates (2026)

Japan Patent Attorneys Association (JPAA)