ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,465,836, issued on Nov. 11, was assigned to GOLFZON Co. LTD. (Seoul, South Korea).
"Rough mat" was invented by Jung Hun Lee (Sejong-si, South Korea) and Gwang Seok Jeon (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "It is an object of the present invention to provide a rough mat that can significantly increase the difficulty compared to golf shots on a fairway mat and form a terrain that makes shots difficult to provide a more realistic golf shot environment on a rough for users to have a sense of hitting on the rough. For this end, the rough mat comprises an upper plate providing a turf part on which a golf ball is placed; and a t...