DR

David C. Rohlfing

Chevron: 18 patents #227 of 4,788Top 5%
PP Phillips Petroleum: 8 patents #209 of 1,401Top 15%
Overall (All Time): #147,023 of 4,157,543Top 4%
27
Patents All Time

Issued Patents All Time

Showing 25 most recent of 27 patents

Patent #TitleCo-InventorsDate
8932975 Catalyst systems and methods of making and using same Qing Yang, Max P. McDaniel, Joel L. Martin, Errun Ding, Tony R. Crain 2015-01-13
8933175 Hyperbranched polymers and methods of making and using same Youlu Yu, Chung Ching Tso, Paul J. DesLauriers, Melvin Hildebrand, Max P. McDaniel +1 more 2015-01-13
8771816 Controlling melt fracture in bimodal resin pipe Paul J. DesLauriers, Yongwoo Inn, Qing Yang, Ashish M. Sukhadia, Pamela L. Maeger 2014-07-08
8637691 Polymerization catalysts for producing polymers with low melt elasticity Qing Yang, Max P. McDaniel, Joel L. Martin, Youlu Yu, Michael D. Jensen 2014-01-28
8475899 Process for producing broader molecular weight distribution polymers with a reverse comonomer distribution and low levels of long chain branches Qing Yang, Max P. McDaniel, Joel L. Martin, Tony R. Crain, Randy S. Muninger +4 more 2013-07-02
8450437 Polymerization catalysts for producing polymers with low melt elasticity Qing Yang, Max P. McDaniel, Joel L. Martin, Youlu Yu, Michael D. Jensen 2013-05-28
8119553 Polymerization catalysts for producing polymers with low melt elasticity Qing Yang, Max P. McDaniel, Joel L. Martin, Youlu Yu, Michael D. Jensen 2012-02-21
8114946 Process for producing broader molecular weight distribution polymers with a reverse comonomer distribution and low levels of long chain branches Qing Yang, Max P. McDaniel, Joel L. Martin, Tony R. Crain, Randy S. Muninger +4 more 2012-02-14
8048679 Method for employing SEC-FTIR data to predict mechanical properties of polyethylene Paul J. DesLauriers 2011-11-01
7829646 Olefin polymers, method of making, and use thereof Paul J. DesLauriers, Max P. McDaniel, Al R. Wolfe, Pamela L. Maeger, William R. Coutant +4 more 2010-11-09
7803629 Method for employing SEC-FTIR data to predict mechanical properties of polyethylene Paul J. DesLauriers 2010-09-28
7732542 Polymerization catalysts for producing high molecular weight polymers with low levels of long chain branching Qing Yang, Michael D. Jensen, Joel L. Martin, Matthew G. Thorn, Max P. McDaniel +1 more 2010-06-08
7652160 Polymerization catalysts for producing high molecular weight polymers with low levels of long chain branching Qing Yang, Michael D. Jensen, Joel L. Martin, Matthew G. Thorn, Max P. McDaniel +1 more 2010-01-26
7589162 Polyethylene compositions and pipe made from same Rajendra K. Krishnaswamy, Qing Yang, Max P. McDaniel, Kumudini C. Jayaratne, Jim French 2009-09-15
7576163 Polymerization catalysts for producing polymers with low levels of long chain branching Qing Yang, Max P. McDaniel, Michael D. Jensen, Matthew G. Thorn, Joel L. Martin +1 more 2009-08-18
7547754 Organometal compound catalyst Max P. McDaniel, Kathy S. Collins, Gil R. Hawley, Michael D. Jensen, Christopher E. Wittner +4 more 2009-06-16
7517939 Polymerization catalysts for producing high molecular weight polymers with low levels of long chain branching Qing Yang, Michael D. Jensen, Joel L. Martin, Matthew G. Thorn, Max P. McDaniel +1 more 2009-04-14
7417097 Organometal compound catalyst Youlu Yu, Max P. McDaniel, Kathy S. Collins, Gil R. Hawley, Michael D. Jensen +4 more 2008-08-26
7056744 Measurement of short chain branching in olefin copolymers using chemometric analysis Paul J. DesLauriers, Alan D. Eastman, Eric T. Hsieh 2006-06-06
6867278 Olefin polymers, method of making, and use thereof Max P. McDaniel, Elizabeth A. Benham, Al R. Wolfe, Paul J. DesLauriers, Pamela L. Meager +2 more 2005-03-15
6833338 Organometal compound catalyst Max P. McDaniel, Kathy S. Collins, Gil R. Hawley, Michael D. Jensen, Christopher E. Wittner +4 more 2004-12-21
6632680 Measurement of short chain branching in olefin copolymers using chemometric analysis Paul J. DesLauriers, Alan D. Eastman, Eric T. Hsieh 2003-10-14
6384161 Method and catalyst system for producing polyolefins with broadened molecular weight distributions M. Bruce Welch, David W. Dockter, Syriac J. Palackal, Bryan E. Hauger 2002-05-07
6355359 Polyethylene film Ashish M. Sukhadia, William R. Coutant, Jim D. Byers, Louis Moore, M. Bruce Welch +5 more 2002-03-12
6214469 Films comprising metallocene catalyzed polyethylene Ashish M. Sukhadia, Jay Janzen, Paul J. DesLauriers, Jim D. Byers, Louis Moore +5 more 2001-04-10