DD

David W. Dockter

Chevron: 12 patents #378 of 4,788Top 8%
PP Phillips Petroleum: 8 patents #209 of 1,401Top 15%
Overall (All Time): #215,625 of 4,157,543Top 6%
20
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12421331 Systems and methods for chromium catalyst activation Max P. McDaniel, Zhihui Gu, Ted H. Cymbaluk, Anand Ramanathan, Julian Abrego +3 more 2025-09-23
12403454 Methods of chromium catalyst activation to reduce gels and improve melt index potential Max P. McDaniel, Zhihui Gu, Ted H. Cymbaluk, Anand Ramanathan, Julian Abrego +1 more 2025-09-02
12325829 Solid oxide and chemically-treated solid oxide catalysts for the pyrolysis of polyethylene Max P. McDaniel, Kathy S. Clear 2025-06-10
12152199 Solid oxide and chemically-treated solid oxide catalysts for the pyrolysis of polyethylene Max P. McDaniel, Kathy S. Clear 2024-11-26
12091620 Systems and processes for processing pyrolysis oil Bruce D. Murray, Scott G. Morrison, Kenneth Fountain, Steven R. Horlacher, Vincent D. McGahee +1 more 2024-09-17
11939542 Systems and processes for processing pyrolysis oil Bruce D. Murray, Scott G. Morrison, Kenneth Fountain, Steven R. Horlacher, Vincent D. McGahee +1 more 2024-03-26
11920089 Solid oxide and chemically-treated solid oxide catalysts for the pyrolysis of polyethylene Max P. McDaniel, Kathy S. Clear 2024-03-05
11802250 Systems and processes for processing pyrolysis oil Bruce D. Murray, Scott G. Morrison, Kenneth Fountain, Steven R. Horlacher, Vincent D. McGahee +1 more 2023-10-31
9914676 Selective hydrogenation using a flow index Joseph Bergmeister, III, Tin-Tack Peter Cheung, Zongxuan Hong, Timothy O. Odi, Charles D. Nolidin +2 more 2018-03-13
9758446 Selective hydrogenation using a flow index Joseph Bergmeister, III, Tin-Tack Peter Cheung, Zongxuan Hong, Timothy O. Odi, Charles D. Nolidin +2 more 2017-09-12
9347139 Methods of removing a protective layer Dennis L. Holtermann, Tin-Tack Peter Cheung, Christopher D. Blessing, Lawrence E. Huff, Joseph Bergmeister, III +2 more 2016-05-24
8535448 Methods of removing a protective layer Dennis L. Holtermann, Tin-Tack Peter Cheung, Christopher D. Blessing, Lawrence E. Huff, Joseph Bergmeister, III +2 more 2013-09-17
6992035 Metallocenes, polymerization catalyst systems, their preparation, and use M. Bruce Welch, Syriac J. Palackal, Bryan E. Hauger, Alexander Koppl, Helmut G. Alt 2006-01-31
6620776 Detergent additive composition and processes therefore and therewith Mitchell D. Refvik 2003-09-16
6509427 Metallocenes, polymerization catalyst systems, their preparation, and use M. Bruce Welch, Syriac J. Palackal, Bryan E. Hauger, Alexander Koppl, Helmut G. Alt 2003-01-21
6506721 Detergent additive composition and processes therefore and therewith Mitchell D. Refvik 2003-01-14
6384161 Method and catalyst system for producing polyolefins with broadened molecular weight distributions M. Bruce Welch, Syriac J. Palackal, Bryan E. Hauger, David C. Rohlfing 2002-05-07
6239060 Supported metallocene catalyst system and method for polymerizing olefins Bryan E. Hauger, M. Bruce Welch, Randall S. Muninger 2001-05-29
6221981 Method for making and using a supported metallcene catalyst system Michael E. Jung, Helmut G. Alt, Bryan E. Hauger, M. Bruce Welch, Syriac J. Palackal +1 more 2001-04-24
6187880 Process for producing an olefin polymer using a metallocene M. Bruce Welch, Syriac J. Palackal, Bryan E. Hauger, Alexander Koppl, Helmut G. Alt 2001-02-13