US Patent Issued to NOVA CHEMICALS (INTERNATIONAL) on Dec. 2 for "Cyclopentadienyl/adamantyl phosphinimine zirconium and hafnium complexes" (Canadian Inventors)

ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,342, issued on Dec. 2, was assigned to NOVA CHEMICALS (INTERNATIONAL) S.A. (Fribourg, Switzerland).

"Cyclopentadienyl/adamantyl phosphinimine zirconium and hafnium complexes" was invented by Xiaoliang Gao (Calgary, Canada), Charles Carter (Calgary, Canada), P. Scott Chisholm (Calgary, Canada), Janelle Smiley-Wiens (Calgary, Canada), Darryl Morrison (Calgary, Canada), Alva Woo (Calgary, Canada), Cheng Fan (Calgary, Canada), Chia Yun Chang (Calgary, Canada) and Frederick Chiu (Calgary, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided in this disclosure are zirconium and hafnium complexes that contain 1) a cyclopentadienyl ligand; 2) an ad...