Inventor · disambiguated record
David C. Rohlfing
Also filed as: ROHLFING DAVID C
27 granted patents·3 pending applications·1,435 citations·filing 1983–2013
98Inventor score
Files withCHEVRON PHILLIPS CHEMICAL CO11PHILLIPS PETROLEUM CO8YANG QING5CHEVERON PHILLIPS CHEMICAL COM1CHEVRON PHILIPS CHEMICAL COMPA1
Top patents by PatentIndex Score
30 records- 0199US7517939B2Polymerization catalysts for producing high molecular weight polymers with low levels of long chain branchingCHEVRON PHILLIPS CHEMICAL CO·Filed 2006·Granted Apr 14, 2009·339 cites·23 claims
- 0298US8114946B2Process for producing broader molecular weight distribution polymers with a reverse comonomer distribution and low levels of long chain branchesYANG QING·Filed 2008·Granted Feb 14, 2012·296 cites·36 claims
- 0398US7732542B2Polymerization catalysts for producing high molecular weight polymers with low levels of long chain branchingCHEVRON PHILLIPS CHEMICAL CO·Filed 2009·Granted Jun 8, 2010·62 cites·20 claims
- 0498US7576163B2Polymerization catalysts for producing polymers with low levels of long chain branchingCHEVRON PHILLIPS CHEMICAL CO·Filed 2006·Granted Aug 18, 2009·53 cites·26 claims
- 0598US6833338B2Organometal compound catalystPHILLIPS PETROLEUM CO·Filed 2003·Granted Dec 21, 2004·100 cites·12 claims
- 0697US8475899B2Process for producing broader molecular weight distribution polymers with a reverse comonomer distribution and low levels of long chain branchesYANG QING·Filed 2011·Granted Jul 2, 2013·23 cites·22 claims
- 0797US8119553B2Polymerization catalysts for producing polymers with low melt elasticityYANG QING·Filed 2007·Granted Feb 21, 2012·26 cites·16 claims
- 0896US7652160B2Polymerization catalysts for producing high molecular weight polymers with low levels of long chain branchingCHEVERON PHILLIPS CHEMICAL COM·Filed 2009·Granted Jan 26, 2010·53 cites·18 claims
- 0995US7417097B2Organometal compound catalystPHILLIPS PETROLEUM CO·Filed 2004·Granted Aug 26, 2008·46 cites·20 claims
- 1095US5710224AMethod for producing polymer of ethylenePHILLIPS PETROLEUM CO·Filed 1995·Granted Jan 20, 1998·117 cites·25 claims
- 1194US8048679B2Method for employing SEC-FTIR data to predict mechanical properties of polyethyleneCHEVRON PHILLIPS CHEMICAL CO·Filed 2010·Granted Nov 1, 2011·13 cites·20 claims
- 1294US7589162B2Polyethylene compositions and pipe made from sameCHEVRON PHILIPS CHEMICAL COMPA·Filed 2006·Granted Sep 15, 2009·23 cites·35 claims
- 1393US8933175B2Hyperbranched polymers and methods of making and using sameYU YOULU·Filed 2012·Granted Jan 13, 2015·14 cites·23 claims
- 1493US8637691B2Polymerization catalysts for producing polymers with low melt elasticityCHEVRON PHILLIPS CHEMICAL CO·Filed 2013·Granted Jan 28, 2014·9 cites·20 claims
- 1593US7829646B2Olefin polymers, method of making, and use thereofCHEVRON PHILLIPS CHEMICAL CO·Filed 2005·Granted Nov 9, 2010·22 cites·16 claims
- 1693US7547754B2Organometal compound catalystCHEVRON PHILLIPS CHEMICAL CO·Filed 2007·Granted Jun 16, 2009·39 cites·21 claims
- 1791US8932975B2Catalyst systems and methods of making and using sameYANG QING·Filed 2010·Granted Jan 13, 2015·28 cites·29 claims
- 1890US6867278B2Olefin polymers, method of making, and use thereofCHEVRON PHILLIPS CHEMICAL CO·Filed 2003·Granted Mar 15, 2005·35 cites·22 claims
- 1989US7803629B2Method for employing SEC-FTIR data to predict mechanical properties of polyethyleneCHEVRON PHILLIPS CHEMICAL CO·Filed 2006·Granted Sep 28, 2010·12 cites·37 claims
- 2089US6632680B1Measurement of short chain branching in olefin copolymers using chemometric analysisFiled 2000·Granted Oct 14, 2003·35 cites·35 claims
- 2186US8771816B2Controlling melt fracture in bimodal resin pipeCHEVRON PHILLIPS CHEMICAL CO·Filed 2012·Granted Jul 8, 2014·6 cites·20 claims
- 2283US6355359B1Polyethylene filmPHILLIPS PETROLEUM CO·Filed 2000·Granted Mar 12, 2002·18 cites·20 claims
- 2380US8450437B2Polymerization catalysts for producing polymers with low melt elasticityYANG QING·Filed 2012·Granted May 28, 2013·2 cites·20 claims
- 2480US7056744B2Measurement of short chain branching in olefin copolymers using chemometric analysisPHILLIPS PETROLEUM CO·Filed 2003·Granted Jun 6, 2006·14 cites·46 claims
- 2570US4628013APhotoelectrochemical cellPHILLIPS PETROLEUM CO·Filed 1983·Granted Dec 9, 1986·17 cites·15 claims
- 2665US6214469B1Films comprising metallocene catalyzed polyethylenePHILLIPS PETROLEUM CO·Filed 1996·Granted Apr 10, 2001·26 cites·10 claims
- 2753US2011035193A1System and method for estimating density of a polymerCHEVRON PHILLIPS CHEMICAL CO·Filed 2009·Application pending·0 cites
- 2846US6384161B1Method and catalyst system for producing polyolefins with broadened molecular weight distributionsPHILLIPS PETROLEUM CO·Filed 1999·Granted May 7, 2002·7 cites·39 claims
- 2946US2007048472A1Polymeric pipe and method of making a polymeric pipeKRISHNASWAMY RAJENDRA K·Filed 2005·Application pending·0 cites
- 3038US2005154159A1Olefin polymers, method of making, and use thereofFiled 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →