Andy Cheng Chang

Person

Houston, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Polyolefin-based elastic film structures, laminates and methods the...
- Patent number 10,967,619
- Issue date Apr 6, 2021
- Dow Global Technologies LLC
- Andy C. Chang
- B32 - LAYERED PRODUCTS
Information Patent Grant
Induced material segregation methods of manufacturing a polycrystal...
- Patent number 10,920,303
- Issue date Feb 16, 2021
- Halliburton Energy Services, Inc.
- Zachary Ryan Murphree
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Polycrystalline diamond compact with gradient interfacial layer
- Patent number 10,711,331
- Issue date Jul 14, 2020
- Halliburton Energy Services, Inc.
- Andy Cheng Chang
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
pH-sensitive chemicals for downhole fluid sensing and communication...
- Patent number 10,598,005
- Issue date Mar 24, 2020
- Halliburton Energy Services, Inc.
- Aaron Prince
- E21 - EARTH DRILLING MINING
Information Patent Grant
Heat-resistant polyolefin compositions suitable for films
- Patent number 10,344,155
- Issue date Jul 9, 2019
- Dow Global Technologies LLC
- Charles F. Diehl
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Changeable well seal tool
- Patent number 10,107,064
- Issue date Oct 23, 2018
- Halliburton Energy Services, Inc.
- William Mark Richards
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Fluid loss well treatment
- Patent number 9,677,371
- Issue date Jun 13, 2017
- Halliburton Energy Services, Inc.
- William Mark Richards
- E21 - EARTH DRILLING MINING
Information Patent Grant
Deformable plug and seal well system
- Patent number 9,677,370
- Issue date Jun 13, 2017
- Halliburton Energy Services, Inc.
- William Mark Richards
- E21 - EARTH DRILLING MINING
Information Patent Grant
Well system cementing plug
- Patent number 9,677,372
- Issue date Jun 13, 2017
- Halliburton Energy Services, Inc.
- Charles Timothy Smith
- E21 - EARTH DRILLING MINING
Information Patent Grant
Elastic films and laminates
- Patent number 8,721,827
- Issue date May 13, 2014
- Dow Global Technologies LLC
- Andy C. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Compositions of ethylene/alpha-olefin multi-block interpolymer for...
- Patent number 8,273,068
- Issue date Sep 25, 2012
- Dow Global Technologies LLC
- Andy C. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Fibers made from copolymers of ethylene/α-olefins
- Patent number 8,067,319
- Issue date Nov 29, 2011
- Dow Global Technologies LLC
- Benjamin C. Poon
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Propylene-based elastomeric composition
- Patent number 8,022,144
- Issue date Sep 20, 2011
- Dow Global Technologies LLC
- Andy C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Fibers made from copolymers of ethylene/α-olefins
- Patent number 7,947,367
- Issue date May 24, 2011
- Dow Global Technologies LLC
- Benjamin C. Poon
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Compositions of ethylene/α-olefin multi-block interpolymer for elas...
- Patent number 7,910,658
- Issue date Mar 22, 2011
- Dow Global Technologies LLC
- Andy C. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Propylene-based elastomeric composition
- Patent number 7,893,161
- Issue date Feb 22, 2011
- Dow Global Technologies Inc.
- Andy C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Blends of styrenic block copolymers and propylene-alpha olefin copo...
- Patent number 7,893,159
- Issue date Feb 22, 2011
- Dow Global Technologies Inc.
- Andy C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Elastomeric resin compositions with improved resistance to draw res...
- Patent number 7,847,029
- Issue date Dec 7, 2010
- Dow Global Technologies, Inc.
- Thomas I. Butler
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Multi-layer, pre-stretched elastic articles
- Patent number 7,807,593
- Issue date Oct 5, 2010
- Dow Global Technologies Inc.
- Rajen M. Patel
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Fibers made from copolymers of ethylene/α-olefins
- Patent number 7,803,728
- Issue date Sep 28, 2010
- Dow Global Technologies Inc.
- Benjamin C. Poon
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Compositions of ethylene/alpha-olefin multi-block interpolymer for...
- Patent number 7,737,061
- Issue date Jun 15, 2010
- Dow Global Technologies Inc.
- Andy C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Compositions of ethylene/α-olefin multi-block interpolymer for elas...
- Patent number 7,737,215
- Issue date Jun 15, 2010
- Dow Global Technologies Inc.
- Andy C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Compositions of ethylene/alpha-olefin multi-block interpolymer for...
- Patent number 7,732,052
- Issue date Jun 8, 2010
- Dow Global Technologies Inc.
- Andy C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Fibers made from copolymers of propylene/α-olefins
- Patent number 7,504,347
- Issue date Mar 17, 2009
- Dow Global Technologies Inc.
- Benjamin C. Poon
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Multi-layer, elastic articles
- Patent number 7,498,282
- Issue date Mar 3, 2009
- Dow Global Technology Inc.
- Rajen M. Patel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Extensible and elastic conjugate fibers and webs having a nontacky...
- Patent number 7,413,803
- Issue date Aug 19, 2008
- Dow Global Technologies Inc.
- Joy F. Jordan
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Compositions of ethylene/α-olefin multi-block interpolymer for elas...
- Patent number 7,355,089
- Issue date Apr 8, 2008
- Dow Global Technologies Inc.
- Andy C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Extensible and elastic conjugate fibers and webs having a nontacky...
- Patent number 7,101,623
- Issue date Sep 5, 2006
- Dow Global Technologies Inc.
- Joy F. Jordan
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Propylene-based copolymers, a method of making the fibers and artic...
- Patent number 7,101,622
- Issue date Sep 5, 2006
- Dow Global Technologies Inc.
- Andy C. Chang
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

Information Patent Application
PH-SENSITIVE CHEMICALS FOR DOWNHOLE FLUID SENSING AND COMMUNICATION...
- Publication number 20190024503
- Publication date Jan 24, 2019
- Halliburton Energy Services, Inc.
- Aaron Prince
- E21 - EARTH DRILLING MINING
Information Patent Application
DEGRADABLE DOWNHOLE TOOLS COMPRISING CELLULOSIC DERIVATIVES
- Publication number 20180128070
- Publication date May 10, 2018
- Halliburton Energy Services, Inc.
- Andy Cheng CHANG
- E21 - EARTH DRILLING MINING
Information Patent Application
INDUCED MATERIAL SEGREGATION METHODS OF MANUFACTURING A POLYCRYSTAL...
- Publication number 20180119254
- Publication date May 3, 2018
- Halliburton Energy Services, Inc.
- Zachary Ryan Murphree
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
POLYCRYSTALLINE DIAMOND COMPACT WITH GRADIENT INTERFACIAL LAYER
- Publication number 20180087134
- Publication date Mar 29, 2018
- Halliburton Energy Services, Inc.
- Andy Cheng Chang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
HEAT-RESISTANT POLYOLEFIN COMPOSITIONS SUITABLE FOR FILMS
- Publication number 20170342251
- Publication date Nov 30, 2017
- DOW GLOBAL TECHNOLOGIES LLC
- Charles F. Diehl
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYOLEFIN-BASED ELASTIC FILM STRUCTURES, LAMINATES AND METHODS THE...
- Publication number 20170253012
- Publication date Sep 7, 2017
- DOW GLOBAL TECHNOLOGIES LLC
- Andy C. Chang
- B32 - LAYERED PRODUCTS
Information Patent Application
POLYOLEFIN-BASED ELASTIC FILM STRUCTURES, LAMINATES AND METHODS THE...
- Publication number 20170246846
- Publication date Aug 31, 2017
- DOW GLOBAL TECHNOLOGIES LLC
- Ronald Wevers
- B32 - LAYERED PRODUCTS
Information Patent Application
Changeable Well Seal Tool
- Publication number 20160115759
- Publication date Apr 28, 2016
- HALLIBURTON ENERGGY SERVICES, INC.
- William Mark Richards
- E21 - EARTH DRILLING MINING
Information Patent Application
Fluid Loss Well Treatment
- Publication number 20150252638
- Publication date Sep 10, 2015
- William Mark Richards
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Well System Cementing Plug
- Publication number 20150198008
- Publication date Jul 16, 2015
- Halliburton Energy Services, Inc.
- Charles Timothy Smith
- E21 - EARTH DRILLING MINING
Information Patent Application
Deformable Plug and Seal Well System
- Publication number 20150167424
- Publication date Jun 18, 2015
- Halliburton Energy Services, Inc.
- William Mark Richards
- E21 - EARTH DRILLING MINING
Information Patent Application
HEAT-RESISTANT POLYOLEFIN COMPOSITIONS SUITABLE FOR FILMS
- Publication number 20150166779
- Publication date Jun 18, 2015
- DOW GLOBAL TECHNOLOGIES LLC
- Charles F. Diehl
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYPROPYLENE-BASED FILM WITH IMPROVED MECHANICAL AND SEALING PROPE...
- Publication number 20150132515
- Publication date May 14, 2015
- Claudia Hernandez
- B32 - LAYERED PRODUCTS
Information Patent Application
ELASTIC NONWOVENS WITH IMPROVED HAPTICS AND MECHANICAL PROPERTIES
- Publication number 20140187114
- Publication date Jul 3, 2014
- DOW BRASIL S.A.
- Hong Peng
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Application
ELASTIC FILMS AND LAMINATES
- Publication number 20130048204
- Publication date Feb 28, 2013
- DOW GLOBAL TECHNOLOGIES LLC
- Andy C. Chang
- B32 - LAYERED PRODUCTS
Information Patent Application
POLYOLEFIN COMPOSITIONS SUITABLE FOR ELASTIC ARTICLES
- Publication number 20110123802
- Publication date May 26, 2011
- DOW GLOBAL TECHNOLOGIES LLC
- Andy C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Propylene-Based Elastomeric Composition
- Publication number 20110118418
- Publication date May 19, 2011
- Andy C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
FIBERS AND FABRICS MADE FROM ETHYLENE/alpha-OLEFIN INTERPOLYMERS
- Publication number 20110003524
- Publication date Jan 6, 2011
- Dow Global Technologies Inc.
- Gert J. Claasen
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Application
Fibers Made From Copolymers of Ethylene/A-Olefins
- Publication number 20100279571
- Publication date Nov 4, 2010
- Benjamin C. Poon
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Application
SYNTHETIC TURF WITH SHOCK ABSORPTION LAYER
- Publication number 20100279032
- Publication date Nov 4, 2010
- Dow Global Technologies Inc.
- Loic Chereau
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Application
MULTI-LAYER, ELASTIC ARTICLES
- Publication number 20090068427
- Publication date Mar 12, 2009
- Dow Global Technologies Inc.
- Rajen M. Patel
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Application
Fibers Made from Copolymers of Ethylene/Alpha-Olefins
- Publication number 20090042472
- Publication date Feb 12, 2009
- Benjamin C. Poon
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Application
Blends of Styrenic Block Copolymers and Propylene-Alpha Olefin Copo...
- Publication number 20080319130
- Publication date Dec 25, 2008
- Dow Global Technologies Inc.
- Andy C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Elastomeric Resin Compositions with Improved Resistance to Draw Res...
- Publication number 20080293890
- Publication date Nov 27, 2008
- Dow Global Technologies Inc.
- Thomas I. Butler
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Compositions of Ethylene/Alpha-Olefin Multi-Block Interpolymer for...
- Publication number 20080280517
- Publication date Nov 13, 2008
- Andy C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Propylene-Based Elastomeric Composition
- Publication number 20080255311
- Publication date Oct 16, 2008
- Andy C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
COMPOSITIONS OF ETHYLENE/ALPHA-OLEFIN MULTI-BLOCK INTERPOLYMER FOR...
- Publication number 20080234435
- Publication date Sep 25, 2008
- Dow Global Technologies Inc.
- Andy C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Propylene Based Meltblown Nonwoven Layers and Composite Structures
- Publication number 20080199673
- Publication date Aug 21, 2008
- Thomas T. Allgeuer
- D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information Patent Application
COMPOSITIONS OF ETHYLENE/ALPHA-OLEFIN MULTI-BLOCK INTERPOLYMER FOR...
- Publication number 20080177242
- Publication date Jul 24, 2008
- Dow Global Technologies Inc.
- Andy C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Multi-Layer, Pre-Stretched Elastic Articles
- Publication number 20070254176
- Publication date Nov 1, 2007
- Dow Global Technologies Inc.
- Rajen M. Patel
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Andy Cheng Chang

Person

Patents Grantslast 30 patents

Polyolefin-based elastic film structures, laminates and methods the...

Induced material segregation methods of manufacturing a polycrystal...

Polycrystalline diamond compact with gradient interfacial layer

pH-sensitive chemicals for downhole fluid sensing and communication...

Heat-resistant polyolefin compositions suitable for films

Changeable well seal tool

Fluid loss well treatment

Deformable plug and seal well system

Well system cementing plug

Elastic films and laminates

Compositions of ethylene/alpha-olefin multi-block interpolymer for...

Fibers made from copolymers of ethylene/α-olefins

Propylene-based elastomeric composition

Fibers made from copolymers of ethylene/α-olefins

Compositions of ethylene/α-olefin multi-block interpolymer for elas...

Propylene-based elastomeric composition

Blends of styrenic block copolymers and propylene-alpha olefin copo...

Elastomeric resin compositions with improved resistance to draw res...

Multi-layer, pre-stretched elastic articles

Fibers made from copolymers of ethylene/α-olefins

Compositions of ethylene/alpha-olefin multi-block interpolymer for...

Compositions of ethylene/α-olefin multi-block interpolymer for elas...

Compositions of ethylene/alpha-olefin multi-block interpolymer for...

Fibers made from copolymers of propylene/α-olefins

Multi-layer, elastic articles

Extensible and elastic conjugate fibers and webs having a nontacky...

Compositions of ethylene/α-olefin multi-block interpolymer for elas...

Extensible and elastic conjugate fibers and webs having a nontacky...

Propylene-based copolymers, a method of making the fibers and artic...

Patents Applicationslast 30 patents

PH-SENSITIVE CHEMICALS FOR DOWNHOLE FLUID SENSING AND COMMUNICATION...

DEGRADABLE DOWNHOLE TOOLS COMPRISING CELLULOSIC DERIVATIVES

INDUCED MATERIAL SEGREGATION METHODS OF MANUFACTURING A POLYCRYSTAL...

POLYCRYSTALLINE DIAMOND COMPACT WITH GRADIENT INTERFACIAL LAYER

HEAT-RESISTANT POLYOLEFIN COMPOSITIONS SUITABLE FOR FILMS

POLYOLEFIN-BASED ELASTIC FILM STRUCTURES, LAMINATES AND METHODS THE...

POLYOLEFIN-BASED ELASTIC FILM STRUCTURES, LAMINATES AND METHODS THE...

Changeable Well Seal Tool

Fluid Loss Well Treatment

Well System Cementing Plug

Deformable Plug and Seal Well System

HEAT-RESISTANT POLYOLEFIN COMPOSITIONS SUITABLE FOR FILMS

POLYPROPYLENE-BASED FILM WITH IMPROVED MECHANICAL AND SEALING PROPE...

ELASTIC NONWOVENS WITH IMPROVED HAPTICS AND MECHANICAL PROPERTIES

ELASTIC FILMS AND LAMINATES

POLYOLEFIN COMPOSITIONS SUITABLE FOR ELASTIC ARTICLES

Propylene-Based Elastomeric Composition

FIBERS AND FABRICS MADE FROM ETHYLENE/alpha-OLEFIN INTERPOLYMERS

Fibers Made From Copolymers of Ethylene/A-Olefins

SYNTHETIC TURF WITH SHOCK ABSORPTION LAYER

MULTI-LAYER, ELASTIC ARTICLES

Fibers Made from Copolymers of Ethylene/Alpha-Olefins

Blends of Styrenic Block Copolymers and Propylene-Alpha Olefin Copo...

Elastomeric Resin Compositions with Improved Resistance to Draw Res...

Compositions of Ethylene/Alpha-Olefin Multi-Block Interpolymer for...

Propylene-Based Elastomeric Composition

COMPOSITIONS OF ETHYLENE/ALPHA-OLEFIN MULTI-BLOCK INTERPOLYMER FOR...

Propylene Based Meltblown Nonwoven Layers and Composite Structures

COMPOSITIONS OF ETHYLENE/ALPHA-OLEFIN MULTI-BLOCK INTERPOLYMER FOR...

Multi-Layer, Pre-Stretched Elastic Articles