المنشورات براءة اختراع 2008 Polymer supported chrome catalyst for olefins polymerization https://patents.google.com/patent/US8846834B2/en https://patents.google.com/patent/US8846834B2/en مزيد من المنشورات Polymer supported chrome catalyst for olefins polymerization https://patents.google.com/patent/US8846834B2/en 2008 Synthesis of acrylic or methacrylic acid/acrylate or methacrylate ester polymers using pervaporation https://patents.google.com/patent/EP2325214A1/en 2009