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USPTO Patent Rankings Data through Sept 30, 2025
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Derek Blackwell — 2 Patents in 2021

Chevron: 2 patents #57 of 352Top 20%
California: #13,721 of 66,859 inventorsTop 25%
Overall (2021): #167,325 of 548,734Top 35%
2 Patents 2021

Issued Patents 2021

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11041128 Catalytic remedy for advanced UCO bleed reduction in recycle hydrocracking operations Theodorus Ludovicus Michael Maesen, Viorel Duma, Varut Komalarajun, Alexander E. Kuperman, Hyunuk Ryu +3 more 2021-06-22
10968405 Catalytic remedy for advanced UCO bleed reduction in recycle hydrocracking operations Theodoras Ludovicus Michael Maesen, Viorel Duma, Varut Komalarajun, Alexander E. Kuperman, Hyunuk Ryu +3 more 2021-04-06