Inventor · disambiguated record
Stephen John Brown
Also filed as: BROWN STEPHEN · BROWN STEPHEN J · BROWN STEPHEN JOHN
48 granted patents·17 pending applications·1,671 citations·filing 1986–2022
98Inventor score
Files withNOVA CHEM INT SA41NOVA CHEMICALS INTERNATIONAL SA8BROWN STEPHEN JOHN3NOVA CHEMICAL INTERNATIONAL S33861589 CANADA INC2
Top patents by PatentIndex Score
65 records- 0199US6372864B1Dual reactor polyethylene process using a phosphinimine catalystNOVA CHEM INT SA·Filed 2000·Granted Apr 16, 2002·169 cites·5 claims
- 0298US9963529B1Multi reactor solution polymerizationNOVA CHEM INT SA·Filed 2017·Granted May 8, 2018·61 cites·23 claims
- 0398US5589555AControl of a solution process for polymerization of ethyleneNOVACOR CHEM INT·Filed 1995·Granted Dec 31, 1996·242 cites·1 claims
- 0497US6984695B2Heterogeneous/homogeneous copolymerNOVA CHEM INT SA·Filed 2003·Granted Jan 10, 2006·213 cites·15 claims
- 0597US6777509B2Solution polymerization processNOVA CHEM INT SA·Filed 2002·Granted Aug 17, 2004·130 cites·9 claims
- 0696US10538654B2Multi reactor solution polymerization, polyethylene and polyethylene filmNOVA CHEM INT SA·Filed 2017·Granted Jan 21, 2020·13 cites·48 claims
- 0794US8585146B1Aircraft seatGIASSON BRIGITTE·Filed 2009·Granted Nov 19, 2013·51 cites·29 claims
- 0894US6342463B1Polymerization catalyst having a phosphinimine ligandNOVA CHEM INT SA·Filed 2000·Granted Jan 29, 2002·72 cites·12 claims
- 0993US8431657B2Catalyst activation in a dual reactor processWANG XIAOCHUAN·Filed 2011·Granted Apr 30, 2013·16 cites·20 claims
- 1093US6277931B1Dual reactor ethylene polymerization processNOVA CHEMICAL INTERNATIONAL S·Filed 1999·Granted Aug 21, 2001·108 cites·7 claims
- 1193US6063879AHigh temperature solution polymerization process with phosphinimine cyclopentadienyl metal (GRP IV) complexNOVA CHEM INT SA·Filed 1997·Granted May 16, 2000·96 cites·31 claims
- 1292US10023729B2Films produced from ethylene interpolymer productsNOVA CHEM INT SA·Filed 2016·Granted Jul 17, 2018·2 cites·29 claims
- 1391US10093780B2Shrink film from single site catalyzed polyethyleneNOVA CHEM INT SA·Filed 2015·Granted Oct 9, 2018·3 cites·8 claims
- 1491US6642313B1Multimodal polyolefin pipeNOVA CHEM INT SA·Filed 2000·Granted Nov 4, 2003·48 cites·19 claims
- 1590US6649558B2Bis-phosphinimine catalystNOVA CHEM INT SA·Filed 2001·Granted Nov 18, 2003·33 cites·14 claims
- 1690US6355744B1Cyclopentadienyl/phosphinimine catalyst with one and only one activatable ligandNOVA CHEM INT SA·Filed 2000·Granted Mar 12, 2002·30 cites·4 claims
- 1787US6114481ACatalyst having a ketimide ligandNOVA CHEM INT SA·Filed 1998·Granted Sep 5, 2000·86 cites·6 claims
- 1886US8101693B2Multi reactor processVAN ASSELDONK LAUWRENCE MARTIN JOZEF·Filed 2010·Granted Jan 24, 2012·22 cites·11 claims
- 1985US10844144B2Non adiabatic 2-phase (liquid-liquid) polymerization processNOVA CHEM INT SA·Filed 2018·Granted Nov 24, 2020·2 cites·19 claims
- 2083US6239238B1Bis-phosphinimine catalystNOVA CHEM INT SA·Filed 1999·Granted May 29, 2001·29 cites·5 claims
- 2183US6180730B1Catalyst deactivationNOVA CHEM INT SA·Filed 1998·Granted Jan 30, 2001·52 cites·15 claims
- 2282US8727440B1Aircraft seat3861589 CANADA INC·Filed 2013·Granted May 20, 2014·7 cites·33 claims
- 2381US11066493B2Catalyst injection system for an olefin polymerization reactorNOVA CHEM INT SA·Filed 2019·Granted Jul 20, 2021·1 cites·32 claims
- 2480US9688588B2Continuous ethylene tetramerization processNOVA CHEMICALS INTERNATIONAL SA·Filed 2013·Granted Jun 27, 2017·2 cites·9 claims
- 2580US6420300B1Catalyst having a ketimide ligandNOVA CHEM INT SA·Filed 2000·Granted Jul 16, 2002·15 cites·11 claims
- 2678US6147172APhosphinimine/heteroatom catalyst componentNOVA CHEM INT SA·Filed 1999·Granted Nov 14, 2000·35 cites·19 claims
- 2778US5519098AActivation of catalyst in ethylene polymerization at high temperaturesNOVACOR CHEM INT·Filed 1994·Granted May 21, 1996·38 cites·4 claims
- 2877US6440890B1Hydrocarbyl phosphinimine/cyclopentadienyl complexes of group IV metals and preparation thereofNOVA CHEM INT SA·Filed 2000·Granted Aug 27, 2002·10 cites·5 claims
- 2976US4780559AProcess for preparing organic fluoridesICI PLC·Filed 1986·Granted Oct 25, 1988·13 cites·4 claims
- 3075US11186655B2Off-line filter free Ziegler-Natta catalyst preparationNOVA CHEM INT SA·Filed 2019·Granted Nov 30, 2021·1 cites·15 claims
- 3172US10160696B2Heat management in ethylene oligomerizationNOVA CHEM INT SA·Filed 2016·Granted Dec 25, 2018·1 cites·14 claims
- 3272US6486276B1Process to prepare ethylene propylene elastomerNOVA CHEM INT SA·Filed 2001·Granted Nov 26, 2002·11 cites·11 claims
- 3370US7741414B2On the fly catalyst transitionsNOVA CHEM INT SA·Filed 2006·Granted Jun 22, 2010·3 cites·2 claims
- 3468US11548837B2Self cleaning reactor systemNOVA CHEM INT SA·Filed 2019·Granted Jan 10, 2023·0 cites·10 claims
- 3568US8727441B1Aircraft seat3861589 CANADA INC·Filed 2013·Granted May 20, 2014·3 cites·27 claims
- 3665US10975170B2Solution polymerization processNOVA CHEM INT SA·Filed 2018·Granted Apr 13, 2021·0 cites·15 claims
- 3764US7201864B2Rotomolding process with reduced cycle timesNOVA CHEM INT SA·Filed 2004·Granted Apr 10, 2007·6 cites·5 claims
- 3863US12486345B2Ethylene copolymer for biaxial orientationNOVA CHEMICALS INTERNATIONAL SA·Filed 2021·Granted Dec 2, 2025·0 cites·23 claims
- 3961US2020238250A1Optimized agitator system for production of polyolefinNOVA CHEM INT SA·Filed 2020·Application pending·0 cites
- 4060US10675605B2Optimized agitator system for production of polyolefinNOVA CHEM INT SA·Filed 2016·Granted Jun 9, 2020·0 cites·25 claims
- 4160US2023279166A1Ethylene interpolymer products having a melt flow-intrinsic viscosity index (mfivi)NOVA CHEM INT SA·Filed 2021·Application pending·0 cites
- 4259US12428547B2Ethylene interpolymer products having unique melt flow-intrinsic viscosity (MFIVI) and high unsaturationNOVA CHEMICALS INTERNATIONAL SA·Filed 2021·Granted Sep 30, 2025·0 cites·11 claims
- 4359US6234950B1Nitrogen substituted phosphinimine ligandNOVA CHEM INT SA·Filed 1999·Granted May 22, 2001·25 cites·8 claims
- 4459US2023348703A1Ethylene interpolymer products having unique melt flow-intrinsic viscosity (mfivi) and high unsaturationNOVA CHEM INT SA·Filed 2021·Application pending·0 cites
- 4558US2024052146A1Plastomers with rapid crystallization ratesNOVA CHEM INT SA·Filed 2022·Application pending·0 cites
- 4658US2024191010A1Very low density polyethylene with rapid crystallization ratesNOVA CHEM INT SA·Filed 2022·Application pending·0 cites
- 4758US2025075016A1PELLETIZED ETHYLENE/a-OLEFIN COPOLYMER PRODUCTNOVA CHEMICALS INTERNATIONAL SA·Filed 2022·Application pending·0 cites
- 4856US2025269631A1Recyclable package with fitmentNOVA CHEMICALS INTERNATIONAL SA·Filed 2022·Application pending·0 cites
- 4953US2006041074A1Heterogeneous/homogeneous copolymerNOVA CHEM INT SA·Filed 2005·Application pending·0 cites
- 5052US2017101354A1Self cleaning reactor systemNOVA CHEMICALS INTERNATIONAL SA·Filed 2015·Application pending·0 cites
Showing the top 50 of 65 patent records by PatentIndex Score.
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