Inventor
WILLIS CARL L
94 patents
⚠️ This page may combine multiple inventors who share the name “WILLIS CARL L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHELL OIL CO
25 patentsUS5594072AJan 14, 1997
Liquid star polymers having terminal hydroxyl groups
SHELL OIL CO129 citations98
US5516831AMay 14, 1996
Selectively sulfonated block copolymers/extender oils
SHELL OIL CO128 citations97
US5405911AApr 11, 1995
Butadiene polymers having terminal functional groups
SHELL OIL CO89 citations97
US5393843AFeb 28, 1995
Butadiene polymers having terminal functional groups
SHELL OIL CO89 citations97
US5416168AMay 16, 1995
Protected functional initiators for making terminally functionalized polymers
SHELL OIL CO89 citations96
US5391663AFeb 21, 1995
Protected functional initiators for making terminally functionalized polymers
SHELL OIL CO72 citations96
US5376745ADec 27, 1994
Low viscosity terminally functionalized isoprene polymers
SHELL OIL CO91 citations96
US5247026ASep 21, 1993
Randomly epoxidized small star polymers
SHELL OIL CO59 citations96
US5002676AMar 26, 1991
Block copolymers
SHELL OIL CO52 citations96
US4970265ANov 13, 1990
Functionalized polymers and process for modifying unsaturated polymers
SHELL OIL CO92 citations96
US4882384ANov 21, 1989
Modified block copolymers
SHELL OIL CO124 citations96
US4480075AOct 30, 1984
Block copolymers of Ziegler-Natta polymerized and anionically polymerized monomers
SHELL OIL CO54 citations96
US4433981AFeb 28, 1984
CO2 Removal from gaseous streams
SHELL OIL CO125 citations96
US5239010AAug 24, 1993
Sulfonated block copolymers
SHELL OIL CO105 citations95
US4851476AJul 25, 1989
Functionalized polymers and process for modifying unsaturated polymers
SHELL OIL CO26 citations93
US4851474AJul 25, 1989
Block copolymer and method of preparing same
SHELL OIL CO25 citations93
US5166277ANov 24, 1992
Hydrogenation of unsaturation in low molecular weight diene polymers
SHELL OIL CO37 citations92
US4868245ASep 19, 1989
Modified block copolymers having carboxyl groups grafted on the alkenyl arene blocks
SHELL OIL CO30 citations90
US4970254ANov 13, 1990
Method for hydrogenating functionalized polymer and products thereof
SHELL OIL CO27 citations88
US4868243ASep 19, 1989
High impact resistant blends of thermoplastic polyesters and modified block copolymers
SHELL OIL CO22 citations82
US4451633AMay 29, 1984
Olefin polymerization
SHELL OIL CO22 citations82
US4396761AAug 2, 1983
Method for removing hydrogenation catalyst residues from hydrogenated conjugated diene polymers
SHELL OIL CO26 citations82
US4306101ADec 15, 1981
Olefin hydration process
SHELL OIL CO21 citations82
US5612435AMar 18, 1997
Terminally functionalized polymers produced using protected functional initiators
SHELL OIL CO11 citations74
US5428114AJun 27, 1995
Randomly epoxidized small star polymers
SHELL OIL CO8 citations74
KRATON POLYMERS US LLC
20 patentsUS7169848B2Jan 30, 2007
Block copolymers and method for making same
KRATON POLYMERS US LLC92 citations99
US6759454B2Jul 6, 2004
Polymer modified bitumen compositions
KRATON POLYMERS US LLC68 citations97
US7169850B2Jan 30, 2007
Block copolymers and method for making same
KRATON POLYMERS US LLC43 citations96
US7067589B2Jun 27, 2006
Block copolymers and method for making same
KRATON POLYMERS US LLC35 citations96
US6987142B2Jan 17, 2006
Adhesives and sealants from controlled distribution block copolymers
KRATON POLYMERS US LLC42 citations96
US7141621B2Nov 28, 2006
Gels from controlled distribution block copolymers
KRATON POLYMERS US LLC19 citations93
US7332542B2Feb 19, 2008
Block copolymers and method for making same
KRATON POLYMERS US LLC11 citations92
US7220798B2May 22, 2007
Process for preparing block copolymer and resulting composition
KRATON POLYMERS US LLC20 citations91
US10202494B2Feb 12, 2019
Block copolymers having amine or phosphine functionalized end blocks
KRATON POLYMERS US LLC25 citations90
US6699941B1Mar 2, 2004
Block copolymer
KRATON POLYMERS US LLC52 citations90
US10053609B2Aug 21, 2018
Styrenic block copolymers as thermally-activated viscosifiers for oilfield applications
KRATON POLYMERS US LLC7 citations84
US7449518B2Nov 11, 2008
High temperature block copolymers and process for making same
KRATON POLYMERS US LLC11 citations84
US7125940B2Oct 24, 2006
Conjugated diene polymers and copolymer blocks and process for preparing same
KRATON POLYMERS US LLC13 citations84
US9364825B2Jun 14, 2016
Block copolymers, their manufacture and their use
KRATON POLYMERS US LLC6 citations83
US9061254B2Jun 23, 2015
Block copolymers, their manufacture and their use
KRATON POLYMERS US LLC6 citations83
US7592390B2Sep 22, 2009
Hydrogenated block copolymer compositions
KRATON POLYMERS US LLC10 citations83
US7625979B2Dec 1, 2009
Process for preparing block copolymer and resulting composition
KRATON POLYMERS US LLC9 citations82
US7585916B2Sep 8, 2009
Block copolymer compositions
KRATON POLYMERS US LLC10 citations82
US7582702B2Sep 1, 2009
Block copolymer compositons
KRATON POLYMERS US LLC10 citations82
US7001950B2Feb 21, 2006
Tetrablock copolymer and compositions containing same
KRATON POLYMERS US LLC12 citations78
BENING ROBERT C
2 patentsKRATON POLYMERS LLC
1 patentWILLIS CARL L
1 patentHANDLIN JR DALE L
1 patentShowing the top 50 of 94 patents by PatentIndex Score.