Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Youlu Yu — 4 Patents in 2021

Chevron: 4 patents #18 of 352Top 6%
Bartlesville, OK: #17 of 74 inventorsTop 25%
Oklahoma: #64 of 1,049 inventorsTop 7%
Overall (2021): #36,547 of 548,734Top 7%
4 Patents 2021

Issued Patents 2021

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
11124586 Particle size control of metallocene catalyst systems in loop slurry polymerization reactors Max P. McDaniel, Carlton E. Ash, Kathy S. Clear, Eric D. Schwerdtfeger, Carlos A. Cruz +1 more 2021-09-21
11098139 Advanced quality control tools for manufacturing bimodal and multimodal polyethylene resins Paul J. DesLauriers, Yongwoo Inn 2021-08-24
11014997 Dual catalyst system for producing high density polyethylenes with long chain branching Errun Ding, Qing Yang, Randall S. Muninger, Yongwoo Inn 2021-05-25
10927201 Ziegler-Natta—metallocene dual catalyst systems with activator-supports Errun Ding, Chung Ching Tso, Qing Yang, Richard M. Buck 2021-02-23