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USPTO Patent Rankings Data through Dec 31, 2025
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Youlu Yu — 2 Patents in 2016

Chevron: 2 patents #67 of 440Top 20%
Bartlesville, OK: #12 of 90 inventorsTop 15%
Oklahoma: #94 of 869 inventorsTop 15%
Overall (2016): #83,537 of 481,213Top 20%
2 Patents 2016

Issued Patents 2016

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9371407 Catalyst system with three metallocenes for producing broad molecular weight distribution polymers Qing Yang, Max P. McDaniel, Tony R. Crain, Yongwoo Inn 2016-06-21
9273159 Metallocene and half sandwich dual catalyst systems for producing broad molecular weight distribution polymers Errun Ding, Qing Yang, Lloyd W. Guatney, Jim B. Askew 2016-03-01