ALEXANDRIA, Va., April 15 -- United States Patent no. 12,599,066, issued on April 14, was assigned to SHENG SAN Co. LTD. (Taichung City, Taiwan).
"Planting column" was invented by Cheng-Chung Chang (Taichung City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A planting column includes a hollow pillar including upper and lower end portions, a body portion located between the upper and lower end portions, and an accommodating chamber located in the body portion. The upper end portion includes a top opening communicating with the accommodating chamber. The body portion includes through holes communicating the accommodating chamber with the outside of the hollow pillar. The lower end portion includes an...