ALEXANDRIA, Va., June 10 -- United States Patent no. 12,291,454, issued on May 6, was assigned to ZEON Corp. (Tokyo).
"Production method of carbon nanotube assembly" was invented by Akiyoshi Shibuya (Tokyo) and Keiichi Kawata (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A production method for growing a carbon nanotube assembly on a substrate having a catalyst on a surface thereof. In this production method, in each of a formation unit that carries out a formation step of reducing a catalyst on the substrate and a growth unit that carries out a growth step of growing a carbon nanotube assembly, the substrate is continuously being conveyed using conveyance units that convey the substrate by screw rot...