US Patent Issued to GM GLOBAL TECHNOLOGY OPERATIONS on March 25 for "Preform with variable fiber density, forming and molding tool and method for forming of composite materials" (Michigan Inventors)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,788, issued on March 25, was assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit).

"Preform with variable fiber density, forming and molding tool and method for forming of composite materials" was invented by Venkateshwar R Aitharaju (Troy, Mich.), Erik Brandon Golm (Sterling Heights, Mich.) and Xiaosong Huang (Novi, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for fabricating a composite panel includes providing a preform including a peripheral edge portion and a central portion. The central portion has a first thickness, the peripheral edge portion has a second thickness that is greater than the first thickness, and a first ...