Inventor

SEO CHOLMIN

JP3 patents

Patents

3 patents

US7259658B2Aug 21, 2007

Passive infrared sensor and obstacle detection system used in the same

OPTEX CO LTD23 citations89

US6943685B2Sep 13, 2005

Intrusion detecting device

OPTEX CO LTD29 citations87

US6992577B2Jan 31, 2006

Combined sensor

OPTEX CO LTD17 citations82