P

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 patents
US5594072AJan 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 patents
US7169848B2Jan 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 patents

KRATON POLYMERS LLC

1 patent

WILLIS CARL L

1 patent

HANDLIN JR DALE L

1 patent

Showing the top 50 of 94 patents by PatentIndex Score.