Product Development History

I.T. Coupler developed (Patent No. 0406140)

Corner Coupler developed (Utility Model No. 0242782)

Z Coupler developed (Patent No. 10-0766813)

NS Coupler developed (Patent No. 10-1160999)

Ultra Coupler developed (Patent Nos. 10-1856949 and 10-2452910)

PC Coupler and Structural Coupler developed (Patent No. 10-2453525)

Terminator developed

Ultra Coupler for fishbone-type rebar developed (Patent No. 10-2896392, PCT application)

Anchorage systems for enlarged-rib rebar and headed bars developed (Design Registration No. 30-1273291, Korean patent application)

Grout-filled Coupler developed (patent application)