Process to produce modified clay, supported metallocene polymerization catalyst Grant US-10982023-B2 United States of America 20 Apr 2021
Process to produce modified clay, modified clay produced and use thereof Grant US-10940460-B2 United States of America 09 Mar 2021
Measurement of surface areas by polyvinylpyrrolidone sorption Grant US-7264777-B1 United States of America 04 Sep 2007