US Patent Issued to HANWHA on April 1 for "Apparatus and method for correcting communication frequency of electronic detonator" (South Korean, North Korean Inventors)

ALEXANDRIA, Va., April 2 -- United States Patent no. 12,267,191, issued on April 1, was assigned to HANWHA Corp. (Seoul, South Korea).

"Apparatus and method for correcting communication frequency of electronic detonator" was invented by Jeong Ho Choi (Cheongju-si, South Korea) and Se Ho Kim (Cheongju-si, North Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Proposed are an apparatus and a method for correcting a communication frequency of an electronic detonator, and the apparatus includes a communication packet reception part configured to receive communication packets generated at a preset frequency transmitted from a main control device, an oscillation frequency determination part configured to deter...