David C. Rohlfing

Person

Bartlesville, OK, US

People

Patents Grantslast 30 patents

Information Patent Grant
Hyperbranched polymers and methods of making and using same
- Patent number 8,933,175
- Issue date Jan 13, 2015
- Chevron Phillips Chemical Company LP
- Youlu Yu
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Catalyst systems and methods of making and using same
- Patent number 8,932,975
- Issue date Jan 13, 2015
- Chevron Phillips Chemical Company LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Controlling melt fracture in bimodal resin pipe
- Patent number 8,771,816
- Issue date Jul 8, 2014
- Chevron Phillips Chemical Company LP
- Paul J. DesLauriers
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Polymerization catalysts for producing polymers with low melt elast...
- Patent number 8,637,691
- Issue date Jan 28, 2014
- Chevron Phillips Chemical Company LP
- Qing Yang
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing broader molecular weight distribution polymer...
- Patent number 8,475,899
- Issue date Jul 2, 2013
- Chevron Phillips Chemical Company LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polymerization catalysts for producing polymers with low melt elast...
- Patent number 8,450,437
- Issue date May 28, 2013
- Chevron Phillips Chemical Company LP
- Qing Yang
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Polymerization catalysts for producing polymers with low melt elast...
- Patent number 8,119,553
- Issue date Feb 21, 2012
- Chevron Phillips Chemical Company LP
- Qing Yang
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing broader molecular weight distribution polymer...
- Patent number 8,114,946
- Issue date Feb 14, 2012
- Chevron Phillips Chemical Company LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for employing SEC-FTIR data to predict mechanical properties...
- Patent number 8,048,679
- Issue date Nov 1, 2011
- Chevron Phillips Chemical Company, LP
- Paul J. DesLauriers
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Olefin polymers, method of making, and use thereof
- Patent number 7,829,646
- Issue date Nov 9, 2010
- Chevron Phillips Chemical Company LP
- Paul J. DesLauriers
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for employing SEC-FTIR data to predict mechanical properties...
- Patent number 7,803,629
- Issue date Sep 28, 2010
- Chevron Phillips Chemical Company, LP
- Paul J. DesLauriers
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polymerization catalysts for producing high molecular weight polyme...
- Patent number 7,732,542
- Issue date Jun 8, 2010
- Chevron Phillips Chemical Company, LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polymerization catalysts for producing high molecular weight polyme...
- Patent number 7,652,160
- Issue date Jan 26, 2010
- Cheveron Phillips Chemical Company, L.P.
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyethylene compositions and pipe made from same
- Patent number 7,589,162
- Issue date Sep 15, 2009
- Chevron Philips Chemical Company LP
- Rajendra K. Krishnaswamy
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polymerization catalysts for producing polymers with low levels of...
- Patent number 7,576,163
- Issue date Aug 18, 2009
- Chevron Phillips Chemical Company, LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Organometal compound catalyst
- Patent number 7,547,754
- Issue date Jun 16, 2009
- Chevron Phillips Chemical Company, LP
- Max P. McDaniel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polymerization catalysts for producing high molecular weight polyme...
- Patent number 7,517,939
- Issue date Apr 14, 2009
- Chevron Phillips Chemical Company, LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Organometal compound catalyst
- Patent number 7,417,097
- Issue date Aug 26, 2008
- Phillips Petroleum Company
- Youlu Yu
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Measurement of short chain branching in olefin copolymers using che...
- Patent number 7,056,744
- Issue date Jun 6, 2006
- Phillips Petroleum Company
- Paul J. DesLauriers
- G01 - MEASURING TESTING
Information Patent Grant
Olefin polymers, method of making, and use thereof
- Patent number 6,867,278
- Issue date Mar 15, 2005
- Chevron Phillips Chemical Company
- Max P. McDaniel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Organometal compound catalyst
- Patent number 6,833,338
- Issue date Dec 21, 2004
- Phillips Petroleum Company
- Max P. McDaniel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Measurement of short chain branching in olefin copolymers using che...
- Patent number 6,632,680
- Issue date Oct 14, 2003
- Paul J. DesLauriers
- G01 - MEASURING TESTING
Information Patent Grant
Method and catalyst system for producing polyolefins with broadened...
- Patent number 6,384,161
- Issue date May 7, 2002
- Phillips Petroleum Company
- M. Bruce Welch
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyethylene film
- Patent number 6,355,359
- Issue date Mar 12, 2002
- Phillips Petroleum Company
- Ashish M. Sukhadia
- B32 - LAYERED PRODUCTS
Information Patent Grant
Films comprising metallocene catalyzed polyethylene
- Patent number 6,214,469
- Issue date Apr 10, 2001
- Phillips Petroleum Company
- Ashish M. Sukhadia
- B32 - LAYERED PRODUCTS
Information Patent Grant
Method for producing polymer of ethylene
- Patent number 5,710,224
- Issue date Jan 20, 1998
- Phillips Petroleum Company
- Helmut G. Alt
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photoelectrochemical cell
- Patent number 4,628,013
- Issue date Dec 9, 1986
- Phillips Petroleum Company
- Joseph E. Figard
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Controlling Melt Fracture in Bimodal Resin Pipe
- Publication number 20130325363
- Publication date Dec 5, 2013
- Chevron Phillips Chemical Company LP
- Paul J. Deslauriers
- G01 - MEASURING TESTING
Information Patent Application
Controlling Melt Fracture in Bimodal Resin Pipe
- Publication number 20130319131
- Publication date Dec 5, 2013
- Chevron Phillips Chemical Company LP
- Yongwoo Inn
- G01 - MEASURING TESTING
Information Patent Application
Controlling Melt Fracture in Bimodal Resin Pipe
- Publication number 20130323450
- Publication date Dec 5, 2013
- Chevron Phillips Chemical Company LP
- Paul J. DesLauriers
- G01 - MEASURING TESTING
Information Patent Application
POLYMERIZATION CATALYSTS FOR PRODUCING POLYMERS WITH LOW MELT ELAST...
- Publication number 20130245302
- Publication date Sep 19, 2013
- Chevron Phillips Chemical Company LP
- Qing Yang
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Hyperbranched Polymers and Methods of Making and Using Same
- Publication number 20130059982
- Publication date Mar 7, 2013
- Chevron Phillips Chemical Company LP
- Youlu YU
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Process for Producing Broader Molecular Weight Distribution Polymer...
- Publication number 20120141710
- Publication date Jun 7, 2012
- Chevron Phillips Chemical Company LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYMERIZATION CATALYSTS FOR PRODUCING POLYMERS WITH LOW MELT ELAST...
- Publication number 20120108765
- Publication date May 3, 2012
- Chevron Phillips Chemical Company LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Novel Catalyst Systems and Methods of Making and Using Same
- Publication number 20120059134
- Publication date Mar 8, 2012
- Chevron Phillips Chemical Company LP
- Qing YANG
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
System and method for estimating density of a polymer
- Publication number 20110035193
- Publication date Feb 10, 2011
- Chevron Phillips Chemical Company LP
- Paul J. Deslauriers
- G01 - MEASURING TESTING
Information Patent Application
METHOD FOR EMPLOYING SEC-FTIR DATA TO PREDICT MECHANICAL PROPERTIES...
- Publication number 20100319440
- Publication date Dec 23, 2010
- Chevron Phillips Chemical Company LP
- Paul J. DesLauriers
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROCESS FOR PRODUCING BROADER MOLECULAR WEIGHT DISTRIBUTION POLYMER...
- Publication number 20100160579
- Publication date Jun 24, 2010
- Chevron Phillips Chemical Company LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYMERIZATION CATALYSTS FOR PRODUCING HIGH MOLECULAR WEIGHT POLYME...
- Publication number 20100069582
- Publication date Mar 18, 2010
- Chevron Phillips Chemical Company LP
- QING YANG
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYMERIZATION CATALYSTS FOR PRODUCING HIGH MOLECULAR WEIGHT POLYME...
- Publication number 20090281342
- Publication date Nov 12, 2009
- Chevron Phillips Chemical Company, LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Polymerization catalysts for producing polymers with low melt elast...
- Publication number 20090088543
- Publication date Apr 2, 2009
- Chevron Phillips Chemical Company LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Method for employing SEC-FTIR data to predict mechanical properties...
- Publication number 20070298508
- Publication date Dec 27, 2007
- Paul J. DesLauriers
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Polymerization catalysts for producing polymers with low levels of...
- Publication number 20070232483
- Publication date Oct 4, 2007
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Organometal compound catalyst
- Publication number 20070197752
- Publication date Aug 23, 2007
- Phillips Petroleum Company
- Max P. McDaniel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Polyethylene compositions and pipe made from same
- Publication number 20070197716
- Publication date Aug 23, 2007
- Rajendra K. Krishnaswamy
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Polymerization catalysts for producing high molecular weight polyme...
- Publication number 20070179044
- Publication date Aug 2, 2007
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Polymeric pipe and method of making a polymeric pipe
- Publication number 20070048472
- Publication date Mar 1, 2007
- Rajendra K. Krishnaswamy
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Organometal compound catalyst
- Publication number 20060287447
- Publication date Dec 21, 2006
- Youlu Yu
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Olefin polymers, method of making, and use thereof
- Publication number 20060079656
- Publication date Apr 13, 2006
- Paul J. DesLauriers
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Olefin polymers, method of making, and use thereof
- Publication number 20050154159
- Publication date Jul 14, 2005
- Paul J. DesLauriers
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Measurement of short chain branching in olefin copolymers using che...
- Publication number 20040033615
- Publication date Feb 19, 2004
- Paul J. DesLauriers
- G01 - MEASURING TESTING
Information Patent Application
Organometal compound catalyst
- Publication number 20030232716
- Publication date Dec 18, 2003
- Phillips Petroleum Company
- Max P. McDaniel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Olefin polymers, method of making, and use thereof
- Publication number 20030199648
- Publication date Oct 23, 2003
- Max P. McDaniel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

David C. Rohlfing

Person

Patents Grantslast 30 patents

Hyperbranched polymers and methods of making and using same

Catalyst systems and methods of making and using same

Controlling melt fracture in bimodal resin pipe

Polymerization catalysts for producing polymers with low melt elast...

Process for producing broader molecular weight distribution polymer...

Polymerization catalysts for producing polymers with low melt elast...

Polymerization catalysts for producing polymers with low melt elast...

Process for producing broader molecular weight distribution polymer...

Method for employing SEC-FTIR data to predict mechanical properties...

Olefin polymers, method of making, and use thereof

Method for employing SEC-FTIR data to predict mechanical properties...

Polymerization catalysts for producing high molecular weight polyme...

Polymerization catalysts for producing high molecular weight polyme...

Polyethylene compositions and pipe made from same

Polymerization catalysts for producing polymers with low levels of...

Organometal compound catalyst

Polymerization catalysts for producing high molecular weight polyme...

Organometal compound catalyst

Measurement of short chain branching in olefin copolymers using che...

Olefin polymers, method of making, and use thereof

Organometal compound catalyst

Measurement of short chain branching in olefin copolymers using che...

Method and catalyst system for producing polyolefins with broadened...

Polyethylene film

Films comprising metallocene catalyzed polyethylene

Method for producing polymer of ethylene

Photoelectrochemical cell

Patents Applicationslast 30 patents

Controlling Melt Fracture in Bimodal Resin Pipe

Controlling Melt Fracture in Bimodal Resin Pipe

Controlling Melt Fracture in Bimodal Resin Pipe

POLYMERIZATION CATALYSTS FOR PRODUCING POLYMERS WITH LOW MELT ELAST...

Hyperbranched Polymers and Methods of Making and Using Same

Process for Producing Broader Molecular Weight Distribution Polymer...

POLYMERIZATION CATALYSTS FOR PRODUCING POLYMERS WITH LOW MELT ELAST...

Novel Catalyst Systems and Methods of Making and Using Same

System and method for estimating density of a polymer

METHOD FOR EMPLOYING SEC-FTIR DATA TO PREDICT MECHANICAL PROPERTIES...

PROCESS FOR PRODUCING BROADER MOLECULAR WEIGHT DISTRIBUTION POLYMER...

POLYMERIZATION CATALYSTS FOR PRODUCING HIGH MOLECULAR WEIGHT POLYME...

POLYMERIZATION CATALYSTS FOR PRODUCING HIGH MOLECULAR WEIGHT POLYME...

Polymerization catalysts for producing polymers with low melt elast...

Method for employing SEC-FTIR data to predict mechanical properties...

Polymerization catalysts for producing polymers with low levels of...

Organometal compound catalyst

Polyethylene compositions and pipe made from same

Polymerization catalysts for producing high molecular weight polyme...

Polymeric pipe and method of making a polymeric pipe

Organometal compound catalyst

Olefin polymers, method of making, and use thereof

Olefin polymers, method of making, and use thereof

Measurement of short chain branching in olefin copolymers using che...

Organometal compound catalyst

Olefin polymers, method of making, and use thereof