Kevin A. Stevens

Person

Houston, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
On-line adjustment of catalysts by trim and olefin polymerization
- Patent number 12,091,476
- Issue date Sep 17, 2024
- ExxonMobil Chemical Patents Inc.
- Kevin A. Stevens
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
On-line adjustment of mixed catalyst ratio by trim and olefin polym...
- Patent number 12,043,679
- Issue date Jul 23, 2024
- ExxonMobil Chemical Patents Inc.
- Kevin A. Stevens
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
In-line trimming of dry catalyst feed
- Patent number 11,976,140
- Issue date May 7, 2024
- ExxonMobil Chemical Patents Inc.
- David F Sanders
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Supported catalyst systems and processes for use thereof
- Patent number 11,738,334
- Issue date Aug 29, 2023
- ExxonMobil Chemical Patents Inc.
- Matthew W. Holtcamp
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Catalyst systems and polymerization processes for using the same
- Patent number 11,712,687
- Issue date Aug 1, 2023
- ExxonMobil Chemical Patents Inc.
- Matthew W. Holtcamp
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Methods to produce heterogeneous polyethylene granules
- Patent number 11,492,428
- Issue date Nov 8, 2022
- ExxonMobil Chemical Patents Inc.
- Xuan Ye
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Catalyst systems including two hafnocene catalyst compounds
- Patent number 11,198,747
- Issue date Dec 14, 2021
- ExxonMobil Chemical Patents Inc.
- Matthew W. Holtcamp
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Metallocene compounds having appended Lewis acids and polymerizatio...
- Patent number 11,186,601
- Issue date Nov 30, 2021
- ExxonMobil Chemical Patents Inc.
- Matthew W. Holtcamp
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyethylene compositions and articles made therefrom
- Patent number 11,130,827
- Issue date Sep 28, 2021
- ExxonMobil Chemical Patents Inc.
- Dongming Li
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Films made from polyethylene compositions and processes for making...
- Patent number 11,046,796
- Issue date Jun 29, 2021
- ExxonMobil Chemical Patents Inc.
- Dongming Li
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Polymerization processes and polymers made therefrom
- Patent number 10,927,205
- Issue date Feb 23, 2021
- ExxonMobil Chemical Patents Inc.
- Kevin A. Stevens
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Catalyst systems and polymerization processes for using the same
- Patent number 10,926,250
- Issue date Feb 23, 2021
- ExxonMobil Chemical Patents Inc.
- Matthew W. Holtcamp
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Polymerization processes and polymers made therefrom
- Patent number 10,899,860
- Issue date Jan 26, 2021
- ExxonMobil Chemical Patents Inc.
- Adriana S. Silva
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Mixed catalyst systems containing bridged metallocenes with a penda...
- Patent number 10,865,258
- Issue date Dec 15, 2020
- ExxonMobil Chemical Patents Inc.
- Matthew W. Holtcamp
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Bridged metallocene catalysts with a pendant group 13 element, cata...
- Patent number 10,851,187
- Issue date Dec 1, 2020
- ExxonMobil Chemical Patents Inc.
- Matthew W. Holtcamp
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Improved In-Situ MAO Derived Silica Supported Single-Site Metalloce...
- Publication number 20240092947
- Publication date Mar 21, 2024
- EXXONMOBIL CHEMICAL PATENTS INC.
- Lubin LUO
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
MEDIUM DENSITY POLYETHYLENE COMPOSITIONS WITH BROAD ORTHOGONAL COMP...
- Publication number 20230399426
- Publication date Dec 14, 2023
- EXXONMOBIL CHEMICAL PATENTS INC.
- Wen LI
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Supported Catalyst Systems and Processes for Use Thereof
- Publication number 20230322972
- Publication date Oct 12, 2023
- EXXONMOBIL CHEMICAL PATENTS INC.
- Matthew W. HOLTCAMP
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Linear Low Density Polyethylene for Film Applications
- Publication number 20230167254
- Publication date Jun 1, 2023
- EXXONMOBIL CHEMICAL PATENTS INC.
- Ru Xie
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Broad Orthogonal Distribution Polyethylenes for Films
- Publication number 20230022149
- Publication date Jan 26, 2023
- EXXONMOBIL CHEMICAL PATENTS INC.
- Matthew W. HOLTCAMP
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Biaxially Oriented Polyethylene Films and Process for Production Th...
- Publication number 20230021760
- Publication date Jan 26, 2023
- EXXONMOBIL CHEMICAL PATENTS INC.
- Nino RUOCCO
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Slurry Trim Feeder Modifications
- Publication number 20220056168
- Publication date Feb 24, 2022
- EXXONMOBIL CHEMICAL PATENTS INC.
- Joshua P. Olson
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Supported Catalyst Systems and Processes for Use Thereof
- Publication number 20220048016
- Publication date Feb 17, 2022
- EXXONMOBIL CHEMICAL PATENTS INC.
- Matthew W. Holtcamp
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
On-Line Adjustment of Mixed Catalyst Ratio By Trim and Olefin Polym...
- Publication number 20220033536
- Publication date Feb 3, 2022
- EXXONMOBIL CHEMICAL PATENTS INC.
- Kevin A. Stevens
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
On-Line Adjustment of Mixed Catalyst Ratio and Olefin Polymerization
- Publication number 20220033535
- Publication date Feb 3, 2022
- EXXONMOBIL CHEMICAL PATENTS INC.
- Kevin A. Stevens
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
On-Line Adjustment of Catalysts by Trim and Olefin Polymerization
- Publication number 20220033537
- Publication date Feb 3, 2022
- EXXONMOBIL CHEMICAL PATENTS INC.
- Kevin A. Stevens
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
IN-LINE TRIMMING OF DRY CATALYST FEED
- Publication number 20210395404
- Publication date Dec 23, 2021
- EXXONMOBIL CHEMICAL PATENTS INC.
- David F. Sanders
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Bridged Metallocene Catalysts with a Pendant Group 13 Element, Cata...
- Publication number 20210079137
- Publication date Mar 18, 2021
- Matthew W. Holtcamp
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Mixed Catalyst Systems Containing Bridged Metallocenes with a Penda...
- Publication number 20210054111
- Publication date Feb 25, 2021
- EXXONMOBIL CHEMICAL PATENTS INC.
- Matthew W. Holtcamp
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Catalyst Systems and Polymerization Processes for Using the Same
- Publication number 20210023540
- Publication date Jan 28, 2021
- EXXONMOBIL CHEMICAL PATENTS INC.
- Matthew W. Holtcamp
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Films Made from Polyethylene Compositions and Processes for Making...
- Publication number 20200165366
- Publication date May 28, 2020
- EXXONMOBIL CHEMICAL PATENTS INC.
- Dongming Li
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Polymerization Processes and Polymers Made Therefrom
- Publication number 20200071437
- Publication date Mar 5, 2020
- EXXONMOBIL CHEMICAL PATENTS INC.
- Kevin A. Stevens
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Metallocene Compounds Having Appended Lewis Acids and Polymerizatio...
- Publication number 20200071349
- Publication date Mar 5, 2020
- EXXONMOBIL CHEMICAL PATENTS INC.
- Matthew W. Holtcamp
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Polymerization Processes and Polymers Made Therefrom
- Publication number 20200071436
- Publication date Mar 5, 2020
- EXXONMOBIL CHEMICAL PATENTS INC.
- Adriana S. Silva
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Methods to Produce Heterogeneous Polyethylene Granules
- Publication number 20190389988
- Publication date Dec 26, 2019
- EXXONMOBIL CHEMICAL PATENTS INC.
- Xuan Ye
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Catalyst Systems Including Two Hafnocene Catalyst Compounds
- Publication number 20190367649
- Publication date Dec 5, 2019
- EXXONMOBIL CHEMICAL PATENTS INC.
- Matthew W. Holtcamp
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Mixed Catalyst Systems Containing Bridged Metallocenes with a Penda...
- Publication number 20190284312
- Publication date Sep 19, 2019
- EXXONMOBIL CHEMICAL PATENTS INC.
- Matthew W. Holtcamp
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Polyethylene Compositions and Articles Made Therefrom
- Publication number 20190263953
- Publication date Aug 29, 2019
- EXXONMOBIL CHEMICAL PATENTS INC.
- Dongming Li
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Bridged Metallocene Catalysts with a Pendant Group 13 Element, Cata...
- Publication number 20190233552
- Publication date Aug 1, 2019
- Matthew W. Holtcamp
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Catalyst Systems and Polymerization Processes for Using the Same
- Publication number 20190168203
- Publication date Jun 6, 2019
- EXXONMOBIL CHEMICAL PATENTS INC.
- Matthew W. Holtcamp
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Kevin A. Stevens

Person

Patents Grantslast 30 patents

On-line adjustment of catalysts by trim and olefin polymerization

On-line adjustment of mixed catalyst ratio by trim and olefin polym...

In-line trimming of dry catalyst feed

Supported catalyst systems and processes for use thereof

Catalyst systems and polymerization processes for using the same

Methods to produce heterogeneous polyethylene granules

Catalyst systems including two hafnocene catalyst compounds

Metallocene compounds having appended Lewis acids and polymerizatio...

Polyethylene compositions and articles made therefrom

Films made from polyethylene compositions and processes for making...

Polymerization processes and polymers made therefrom

Catalyst systems and polymerization processes for using the same

Polymerization processes and polymers made therefrom

Mixed catalyst systems containing bridged metallocenes with a penda...

Bridged metallocene catalysts with a pendant group 13 element, cata...

Patents Applicationslast 30 patents

Improved In-Situ MAO Derived Silica Supported Single-Site Metalloce...

MEDIUM DENSITY POLYETHYLENE COMPOSITIONS WITH BROAD ORTHOGONAL COMP...

Supported Catalyst Systems and Processes for Use Thereof

Linear Low Density Polyethylene for Film Applications

Broad Orthogonal Distribution Polyethylenes for Films

Biaxially Oriented Polyethylene Films and Process for Production Th...

Slurry Trim Feeder Modifications

Supported Catalyst Systems and Processes for Use Thereof

On-Line Adjustment of Mixed Catalyst Ratio By Trim and Olefin Polym...

On-Line Adjustment of Mixed Catalyst Ratio and Olefin Polymerization

On-Line Adjustment of Catalysts by Trim and Olefin Polymerization

IN-LINE TRIMMING OF DRY CATALYST FEED

Bridged Metallocene Catalysts with a Pendant Group 13 Element, Cata...

Mixed Catalyst Systems Containing Bridged Metallocenes with a Penda...

Catalyst Systems and Polymerization Processes for Using the Same

Films Made from Polyethylene Compositions and Processes for Making...

Polymerization Processes and Polymers Made Therefrom

Metallocene Compounds Having Appended Lewis Acids and Polymerizatio...

Polymerization Processes and Polymers Made Therefrom

Methods to Produce Heterogeneous Polyethylene Granules

Catalyst Systems Including Two Hafnocene Catalyst Compounds

Mixed Catalyst Systems Containing Bridged Metallocenes with a Penda...

Polyethylene Compositions and Articles Made Therefrom

Bridged Metallocene Catalysts with a Pendant Group 13 Element, Cata...

Catalyst Systems and Polymerization Processes for Using the Same