VD

Viorel Duma

Chevron: 7 patents #676 of 4,788Top 15%
AT Advanced Refining Technologies: 5 patents #8 of 26Top 35%
Overall (All Time): #368,328 of 4,157,543Top 9%
13
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12011710 Tetrametallic bulk hydroprocessing catalysts Xiaoying Ouyang, Alexander E. Kuperman, Ibrahim J. Uckung, Theodorus Ludovicus Michael Maesen, Axel Brait +1 more 2024-06-18
11951458 Tetrametallic bulk hydroprocessing catalysts Xiaoying Ouyang, Alexander E. Kuperman, Ibrahim J. Uckung, Theodorus Ludovicus Michael Maesen, Axel Brait +1 more 2024-04-09
11731112 Tetrametallic bulk hydroprocessing catalysts Xiaoying Ouyang, Alexander E. Kuperman, Ibrahim J. Uckung, Theodorus Ludovicus Michael Maesen, Axel Brait +1 more 2023-08-22
11041128 Catalytic remedy for advanced UCO bleed reduction in recycle hydrocracking operations Theodorus Ludovicus Michael Maesen, Derek Blackwell, Varut Komalarajun, Alexander E. Kuperman, Hyunuk Ryu +3 more 2021-06-22
11000839 Regeneration of an ionic liquid catalyst by hydrogenation using a macroporous noble metal catalyst Hye Kyung Cho Timken, Jeff William Johns, Rahul Shankar Bhaduri, John V. Heyse 2021-05-11
10968405 Catalytic remedy for advanced UCO bleed reduction in recycle hydrocracking operations Theodoras Ludovicus Michael Maesen, Derek Blackwell, Varut Komalarajun, Alexander E. Kuperman, Hyunuk Ryu +3 more 2021-04-06
10589254 Spheroidal resid hydrodemetallation catalyst Stanislaw Plecha, Narinobu Kagami, John Everett Creighton, IV 2020-03-17
10584288 Extruded resid demetallation catalyst Matthew P. Woods 2020-03-10
10279335 Spheroidal resid hydrodemetallation catalyst Stanislaw Plecha, Narinobu Kagami, John Everett Creighton, IV 2019-05-07
9956553 Regeneration of an ionic liquid catalyst by hydrogenation using a macroporous noble metal catalyst Hye Kyung Cho Timken, Jeff William Johns, Rahul Shankar Bhaduri, John V. Heyse 2018-05-01
9908105 Resid hydrotreating catalyst Matthew P. Woods, Stanislaw Plecha 2018-03-06
9216407 Resid hydrotreating catalyst Matthew P. Woods, Stanislaw Plecha 2015-12-22
6392065 Method of producing epoxy resins by gas phase epoxidation Dieter Hönicke, Waldemar Krysmann 2002-05-21