US Patent Issued to BI-MIRTH on April 15 for "Self-drilling screw structure and manufacturing method thereof" (Taiwanese Inventor)

ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,296, issued on April 15, was assigned to BI-MIRTH CORP. (Kaohsiung, Taiwan).

"Self-drilling screw structure and manufacturing method thereof" was invented by Yi-Chieh Shih (Kaohsiung, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention provides a self-drilling screw structure and a manufacturing method thereof, wherein the manufacturing method includes: providing screw body, forming drill tail screw rod section, forming concave neck portion, forming drill tail cutting edge and forming thread. The self-drilling screw structure including a screw head portion and a screw rod portion, the screw rod portion is sequentially provided with a ...