Patent assignee · CH · COMPANY

NOVA Chemicals (International) S.A.

420Patents
334Active
420Granted
57Portfolio score

Filing activity: Jun 19, 1996 → Apr 19, 2024 · 34 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US6984695B2 Heterogeneous/homogeneous copolymer Emerging Cross-Sectional Technologies 113 Expired
US5965677A Supported phosphinimine-Cp catalysts Emerging Cross-Sectional Technologies 94 Expired
US6372864B1 Dual reactor polyethylene process using a phosphinimine catalyst Emerging Cross-Sectional Technologies 75 Expired
US6277931A Dual reactor ethylene polymerization process Chemistry; Metallurgy 63 Expired
US6777509B2 Solution polymerization process Chemistry; Metallurgy 60 Expired
US6063879A High temperature solution polymerization process with phosphinimine cyclopentadienyl metal (GRP IV) complex Chemistry; Metallurgy 55 Expired
US6235672A Mixed phosphinimine catalyst Emerging Cross-Sectional Technologies 52 Expired
US6242540A Process for the preparation of polymer particles Chemistry; Metallurgy 48 Expired
US6160027A Process for the preparation of polymer particles Chemistry; Metallurgy 45 Expired
US6342463B1 Polymerization catalyst having a phosphinimine ligand Chemistry; Metallurgy 44 Expired
US8252955B2 Trimerization Chemistry; Metallurgy 43 Active
US6127439A Process for the preparation of polymer particles Chemistry; Metallurgy 43 Expired
US8022143B2 Closures for bottles Chemistry; Metallurgy 38 Active
US8252956B2 Amino phosphine Chemistry; Metallurgy 37 Active
US7994363B2 Amino phosphine Chemistry; Metallurgy 37 Active
US7829749B2 Tetramerization Chemistry; Metallurgy 36 Active
US6114481A Catalyst having a ketimide ligand Emerging Cross-Sectional Technologies 36 Expired
US7531602B2 Polymer blends Emerging Cross-Sectional Technologies 35 Active
US7513988B2 Aromatic saturation and ring opening process Emerging Cross-Sectional Technologies 32 Active
US6340532B1 Shrink films Emerging Cross-Sectional Technologies 30 Expired
US9079991B2 Ethylene copolymers, film and polymerization process Chemistry; Metallurgy 27 Active
US9096745B2 Polyethylene blend compositions and film Chemistry; Metallurgy 25 Active
US9074082B2 Polyethylene compositions having high dimensional stability and excellent processability for caps and closures Chemistry; Metallurgy 24 Active
US6899966B2 Composite surface on a stainless steel matrix Emerging Cross-Sectional Technologies 23 Expired
US8962755B2 Polyethylene compositions and closures for bottles Chemistry; Metallurgy 23 Active

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.