Inventor
ROHLFING DAVID C
US27 patents
⚠️ This page may combine multiple inventors who share the name “ROHLFING DAVID C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CHEVRON PHILLIPS CHEMICAL CO
10 patentsUS7517939B2Apr 14, 2009
Polymerization catalysts for producing high molecular weight polymers with low levels of long chain branching
CHEVRON PHILLIPS CHEMICAL CO339 citations99
US7732542B2Jun 8, 2010
Polymerization catalysts for producing high molecular weight polymers with low levels of long chain branching
CHEVRON PHILLIPS CHEMICAL CO62 citations98
US7547754B2Jun 16, 2009
Organometal compound catalyst
CHEVRON PHILLIPS CHEMICAL CO39 citations96
US6867278B2Mar 15, 2005
Olefin polymers, method of making, and use thereof
CHEVRON PHILLIPS CHEMICAL CO35 citations95
US7576163B2Aug 18, 2009
Polymerization catalysts for producing polymers with low levels of long chain branching
CHEVRON PHILLIPS CHEMICAL CO53 citations94
US7829646B2Nov 9, 2010
Olefin polymers, method of making, and use thereof
CHEVRON PHILLIPS CHEMICAL CO22 citations91
US8637691B2Jan 28, 2014
Polymerization catalysts for producing polymers with low melt elasticity
CHEVRON PHILLIPS CHEMICAL CO9 citations84
US8048679B2Nov 1, 2011
Method for employing SEC-FTIR data to predict mechanical properties of polyethylene
CHEVRON PHILLIPS CHEMICAL CO13 citations84
US7803629B2Sep 28, 2010
Method for employing SEC-FTIR data to predict mechanical properties of polyethylene
CHEVRON PHILLIPS CHEMICAL CO12 citations84
US8771816B2Jul 8, 2014
Controlling melt fracture in bimodal resin pipe
CHEVRON PHILLIPS CHEMICAL CO6 citations72
PHILLIPS PETROLEUM CO
8 patentsUS6833338B2Dec 21, 2004
Organometal compound catalyst
PHILLIPS PETROLEUM CO100 citations98
US5710224AJan 20, 1998
Method for producing polymer of ethylene
PHILLIPS PETROLEUM CO117 citations97
US7417097B2Aug 26, 2008
Organometal compound catalyst
PHILLIPS PETROLEUM CO46 citations96
US6355359B1Mar 12, 2002
Polyethylene film
PHILLIPS PETROLEUM CO18 citations92
US6214469B1Apr 10, 2001
Films comprising metallocene catalyzed polyethylene
PHILLIPS PETROLEUM CO26 citations92
US7056744B2Jun 6, 2006
Measurement of short chain branching in olefin copolymers using chemometric analysis
PHILLIPS PETROLEUM CO14 citations84
US4628013ADec 9, 1986
Photoelectrochemical cell
PHILLIPS PETROLEUM CO17 citations78
US6384161B1May 7, 2002
Method and catalyst system for producing polyolefins with broadened molecular weight distributions
PHILLIPS PETROLEUM CO7 citations73
YANG QING
5 patentsUS8114946B2Feb 14, 2012
Process for producing broader molecular weight distribution polymers with a reverse comonomer distribution and low levels of long chain branches
YANG QING296 citations98
US8932975B2Jan 13, 2015
Catalyst systems and methods of making and using same
YANG QING28 citations94
US8119553B2Feb 21, 2012
Polymerization catalysts for producing polymers with low melt elasticity
YANG QING26 citations93
US8475899B2Jul 2, 2013
Process for producing broader molecular weight distribution polymers with a reverse comonomer distribution and low levels of long chain branches
YANG QING23 citations92
US8450437B2May 28, 2013
Polymerization catalysts for producing polymers with low melt elasticity
YANG QING2 citations63