ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,191, issued on April 22, was assigned to NOVA Chemicals (International) S.A. (Fribourg, Switzerland).
"Devolatilization of plastomer pellets" was invented by Abolfazl Noorjahan (Calgary, Canada), Stephen Brown (Calgary, Canada), Lawrence Van Asseldonk (Sarnia, Canada), Robert Van Asseldonk (Airdrie, Canada), Jeffrey Cahill (Calgary, Canada), Carlos Duque (Calgary, Canada) and William Oberg (Red Deer, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "The devolatilization of plastomer pellets is undertaken using nitrogen that is recycled in the process. Volatile hydrocarbons are removed from the nitrogen in a hydrocarbon extraction vessel (e.g. an ...