David W. Leyshon

Person

Houston, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Titanated catalysts, methods of preparing titanated catalysts, and...
- Patent number 11,590,477
- Issue date Feb 28, 2023
- Lyondell Chemical Technology, L.P.
- Sandor Nagy
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method of improving olefin isomerization
- Patent number 11,440,858
- Issue date Sep 13, 2022
- Lyondell Chemical Technology, L.P.
- Rick B. Watson
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Isobutylene to propylene process flow improvement
- Patent number 11,261,142
- Issue date Mar 1, 2022
- Lyondell Chemical Technology, L.P.
- David W. Leyshon
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Alkylene oxide separation system
- Patent number 10,513,502
- Issue date Dec 24, 2019
- Lyondell Chemical Technology, L.P.
- Elizabeth I. Ross-Medgaarden
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Methods of producing propylene and ethylene
- Patent number 10,513,472
- Issue date Dec 24, 2019
- Lyondell Chemical Technology, L.P.
- David W. Leyshon
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Alkylene oxide separation systems, methods, and apparatuses
- Patent number 10,233,166
- Issue date Mar 19, 2019
- Lyondell Chemical Technology, L.P.
- Xiangmin Li
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Catalyst performance in propylene epoxidation
- Patent number 9,932,318
- Issue date Apr 3, 2018
- Lyondell Chemical Technology, L.P.
- Vu A. Dang
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Oxidative methods of phosphorus removal from liquid hydrocarbons
- Patent number 9,873,648
- Issue date Jan 23, 2018
- Lyondell Chemical Technology, L.P.
- David W. Leyshon
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Process for forming propylene oxide from oxidation of methyl benzyl...
- Patent number 9,643,943
- Issue date May 9, 2017
- Lyondell Chemical Technology, L.P.
- Vu A. Dang
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Alkylene oxide separation systems, methods, and apparatuses
- Patent number 9,593,090
- Issue date Mar 14, 2017
- Lyondell Chemical Technology, L.P.
- Xiangmin Li
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Production of propylene glycol monoalkyl ether
- Patent number 9,586,881
- Issue date Mar 7, 2017
- Lyondell Chemical Technology, L.P.
- Xiangmin Li
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Alkylene oxide separation systems, methods, and apparatuses
- Patent number 8,981,133
- Issue date Mar 17, 2015
- Lyondell Chemical Technology, L.P.
- Xiangmin Li
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Propylene production
- Patent number 8,178,737
- Issue date May 15, 2012
- Lyondell Chemical Technology, L.P.
- David W. Leyshon
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Diisobutylene process
- Patent number 8,067,655
- Issue date Nov 29, 2011
- Lyondell Chemical Technology, L.P.
- Natalie C. M. B. Nichols
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Propylene and isoprene production
- Patent number 7,816,572
- Issue date Oct 19, 2010
- Lyondell Chemical Technology, L.P.
- David W. Leyshon
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Upgrading drip oil
- Patent number 7,527,725
- Issue date May 5, 2009
- Equistar Chemicals, LP
- Krishnan Viswanathan
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Organosulfur oxidation process
- Patent number 7,270,742
- Issue date Sep 18, 2007
- Lyondell Chemical Technology, L.P.
- Lawrence J. Karas
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Purification of N-(2-hydroxyethyl)-2-pyrrolidone
- Patent number 7,238,260
- Issue date Jul 3, 2007
- Lyondell Chemical Technology, L.P.
- Andrew P. Kahn
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Desulfurization process
- Patent number 7,144,499
- Issue date Dec 5, 2006
- Lyondell Chemical Technology, L.P.
- Yuan-Zhang Han
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Peroxide impurities removal
- Patent number 6,755,979
- Issue date Jun 29, 2004
- ARCO Chemical Technology, L.P.
- Carl L. Williams
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Epoxidation system with fixed bed reactors
- Patent number 6,583,300
- Issue date Jun 24, 2003
- ARCO Chemical Technology, L.P.
- David W. Leyshon
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for highly exothermic epoxidation reactions
- Patent number 6,562,987
- Issue date May 13, 2003
- ARCO Chemical Technology, L.P.
- David W. Leyshon
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Epoxidation process
- Patent number 6,512,129
- Issue date Jan 28, 2003
- ARCO Chemical Technology, L.P.
- Xiangmin Li
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Purification process
- Patent number 5,993,673
- Issue date Nov 30, 1999
- ARCO Chemical Technology, L.P.
- Thomas I. Evans
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Epoxidation Process
- Patent number 5,591,875
- Issue date Jan 7, 1997
- Te Chang
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Production of hydrogen peroxide
- Patent number 5,254,326
- Issue date Oct 19, 1993
- Arco Chemical Technology, L.P.
- David W. Leyshon
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Recovery of hydrogen peroxide
- Patent number 5,194,067
- Issue date Mar 16, 1993
- Arco Chemical Technology, L.P.
- Rajendra S. Albal
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for reclaiming a thermoset polymer
- Patent number 5,192,809
- Issue date Mar 9, 1993
- Arco Chemical Technology, L.P.
- C. Andrew Jones
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Propylene oxide production
- Patent number 5,107,001
- Issue date Apr 21, 1992
- Arco Chemical Technology, L.P.
- Morris Gelb
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Production of olefins from a mixture of Cu.sup.+ olefins and paraffins
- Patent number 5,043,522
- Issue date Aug 27, 1991
- ARCO Chemical Technology, Inc.
- David W. Leyshon
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...

Patents Applicationslast 30 patents

Information Patent Application
PROPYLENE POLYOL CONVERSION TO OLEFIN MONOMER
- Publication number 20240182388
- Publication date Jun 6, 2024
- Basell Poliolefine Italia s.r.l.
- Sandor Nagy
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROPYLENE POLYOL CONVERSION TO OLEFIN MONOMER
- Publication number 20240182389
- Publication date Jun 6, 2024
- Basell Poliolefine Italia s.r.l.
- Sandor Nagy
- C07 - ORGANIC CHEMISTRY
Information Patent Application
USE OF CARBON DIOXIDE TO IMPROVE CAUSTIC WASHING OF ALKYLENE OXIDE...
- Publication number 20230339832
- Publication date Oct 26, 2023
- Lyondell Chemical Technology, L.P.
- David W. Leyshon
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD OF IMPROVING ISOMERIZATION CATALYST LIFETIME
- Publication number 20220401934
- Publication date Dec 22, 2022
- Lyondell Chemical Technology, L.P.
- Rick B. Watson
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD OF IMPROVING OLEFIN ISOMERIZATION
- Publication number 20220135500
- Publication date May 5, 2022
- Lyondell Chemical Technology, L.P.
- Rick B. Watson
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
OLEFIN ISOMERIZATION WITH SMALL CRYSTALLITE ZEOLITE CATALYST
- Publication number 20220135499
- Publication date May 5, 2022
- Lyondell Chemical Technology, L.P.
- Rick B. Watson
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
ISOBUTYLENE TO PROPYLENE PROCESS FLOW IMPROVEMENT
- Publication number 20210403396
- Publication date Dec 30, 2021
- Lyondell Chemical Technology, L.P.
- David W. Leyshon
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
TITANATED CATALYSTS, METHODS OF PREPARING TITANATED CATALYSTS, AND...
- Publication number 20210129113
- Publication date May 6, 2021
- Lyondell Chemical Technology, L.P.
- Sandor Nagy
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
TITANATED CATALYSTS, METHODS OF PREPARING TITANATED CATALYSTS, AND...
- Publication number 20210129112
- Publication date May 6, 2021
- Lyondell Chemical Technology, L.P.
- Sandor Nagy
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
ALKYLENE OXIDE SEPARATION SYSTEM
- Publication number 20190241534
- Publication date Aug 8, 2019
- Lyondell Chemical Technology, L.P.
- Elizabeth I. Ross-Medgaarden
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHODS OF PRODUCING PROPYLENE AND ETHYLENE
- Publication number 20190127291
- Publication date May 2, 2019
- Lyondell Chemical Technology, L.P.
- David W. Leyshon
- C07 - ORGANIC CHEMISTRY
Information Patent Application
ALKYLENE OXIDE SEPARATION SYSTEMS, METHODS, AND APPARATUSES
- Publication number 20170137394
- Publication date May 18, 2017
- Lyondell Chemical Technology, L.P.
- Xiangmin Li
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
CATALYST PERFORMANCE IN PROPYLENE EPOXIDATION
- Publication number 20160297782
- Publication date Oct 13, 2016
- Lyondell Chemical Technology, L.P.
- Vu A. Dang
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
PROCESS FOR FORMING PROPYLENE OXIDE FROM OXIDATION OF METHYL BENZYL...
- Publication number 20160297783
- Publication date Oct 13, 2016
- Lyondell Chemical Technology, L.P.
- Vu A. Dang
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
OXIDATIVE METHODS OF PHOSPHORUS REMOVAL FROM LIQUID HYDROCARBONS
- Publication number 20160115102
- Publication date Apr 28, 2016
- LYONDELL CHEMICAL TECHNOLOGY, L.P.
- David W. Leyshon
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PRODUCTION OF PROPYLENE GLYCOL MONOALKYL ETHER
- Publication number 20160031779
- Publication date Feb 4, 2016
- XIANGMIN LI
- C07 - ORGANIC CHEMISTRY
Information Patent Application
ALKYLENE OXIDE SEPARATION SYSTEMS, METHODS, AND APPARATUSES
- Publication number 20150031905
- Publication date Jan 29, 2015
- LYONDELL CHEMICAL TECHNOLOGY, L.P.
- Xiangmin Li
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
ALKYLENE OXIDE SEPARATION SYSTEMS, METHODS, AND APPARATUSES
- Publication number 20120312680
- Publication date Dec 13, 2012
- Xiangmin LI
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Purification of ultralow sulfur diesel fuel
- Publication number 20100155302
- Publication date Jun 24, 2010
- Mark P. Kaminsky
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
Diisobutylene process
- Publication number 20100145122
- Publication date Jun 10, 2010
- Thomas S. Zak
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Diisobutylene process
- Publication number 20090299117
- Publication date Dec 3, 2009
- Natalie C.M.B. Nichols
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Propylene and isoprene production
- Publication number 20090043144
- Publication date Feb 12, 2009
- David W. Leyshon
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Propylene production
- Publication number 20080312481
- Publication date Dec 18, 2008
- David W. Leyshon
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Propylene production
- Publication number 20080146856
- Publication date Jun 19, 2008
- David W. Leyshon
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Upgrading drip oil
- Publication number 20070249886
- Publication date Oct 25, 2007
- Krishnan Viswanathan
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Purification of N-(2-hydroxyethyl)-2-pyrrolidone
- Publication number 20060086602
- Publication date Apr 27, 2006
- Andrew P. Kahn
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Desulfurization process
- Publication number 20050109677
- Publication date May 26, 2005
- Yuan-Zhang Han
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
Organosulfur oxidation process
- Publication number 20040178121
- Publication date Sep 16, 2004
- David W. Leyshon
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
Organosulfur oxidation process
- Publication number 20040178122
- Publication date Sep 16, 2004
- Lawrence J. Karas
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
Peroxide impurities removal
- Publication number 20040031763
- Publication date Feb 19, 2004
- Carl L. Williams
- C07 - ORGANIC CHEMISTRY

David W. Leyshon

Person

Patents Grantslast 30 patents

Titanated catalysts, methods of preparing titanated catalysts, and...

Method of improving olefin isomerization

Isobutylene to propylene process flow improvement

Alkylene oxide separation system

Methods of producing propylene and ethylene

Alkylene oxide separation systems, methods, and apparatuses

Catalyst performance in propylene epoxidation

Oxidative methods of phosphorus removal from liquid hydrocarbons

Process for forming propylene oxide from oxidation of methyl benzyl...

Alkylene oxide separation systems, methods, and apparatuses

Production of propylene glycol monoalkyl ether

Alkylene oxide separation systems, methods, and apparatuses

Propylene production

Diisobutylene process

Propylene and isoprene production

Upgrading drip oil

Organosulfur oxidation process

Purification of N-(2-hydroxyethyl)-2-pyrrolidone

Desulfurization process

Peroxide impurities removal

Epoxidation system with fixed bed reactors

Method for highly exothermic epoxidation reactions

Epoxidation process

Purification process

Epoxidation Process

Production of hydrogen peroxide

Recovery of hydrogen peroxide

Process for reclaiming a thermoset polymer

Propylene oxide production

Production of olefins from a mixture of Cu.sup.+ olefins and paraffins

Patents Applicationslast 30 patents

PROPYLENE POLYOL CONVERSION TO OLEFIN MONOMER

PROPYLENE POLYOL CONVERSION TO OLEFIN MONOMER

USE OF CARBON DIOXIDE TO IMPROVE CAUSTIC WASHING OF ALKYLENE OXIDE...

METHOD OF IMPROVING ISOMERIZATION CATALYST LIFETIME

METHOD OF IMPROVING OLEFIN ISOMERIZATION

OLEFIN ISOMERIZATION WITH SMALL CRYSTALLITE ZEOLITE CATALYST

ISOBUTYLENE TO PROPYLENE PROCESS FLOW IMPROVEMENT

TITANATED CATALYSTS, METHODS OF PREPARING TITANATED CATALYSTS, AND...

TITANATED CATALYSTS, METHODS OF PREPARING TITANATED CATALYSTS, AND...

ALKYLENE OXIDE SEPARATION SYSTEM

METHODS OF PRODUCING PROPYLENE AND ETHYLENE

ALKYLENE OXIDE SEPARATION SYSTEMS, METHODS, AND APPARATUSES

CATALYST PERFORMANCE IN PROPYLENE EPOXIDATION

PROCESS FOR FORMING PROPYLENE OXIDE FROM OXIDATION OF METHYL BENZYL...

OXIDATIVE METHODS OF PHOSPHORUS REMOVAL FROM LIQUID HYDROCARBONS

PRODUCTION OF PROPYLENE GLYCOL MONOALKYL ETHER

ALKYLENE OXIDE SEPARATION SYSTEMS, METHODS, AND APPARATUSES

ALKYLENE OXIDE SEPARATION SYSTEMS, METHODS, AND APPARATUSES

Purification of ultralow sulfur diesel fuel

Diisobutylene process

Diisobutylene process

Propylene and isoprene production

Propylene production

Propylene production

Upgrading drip oil

Purification of N-(2-hydroxyethyl)-2-pyrrolidone

Desulfurization process

Organosulfur oxidation process

Organosulfur oxidation process

Peroxide impurities removal