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USPTO Patent Rankings Data through Sept 30, 2025
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Mitchell D. Refvik — 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): #43,673 of 548,734Top 8%
4 Patents 2021

Issued Patents 2021

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
11117122 Methods of preparing a catalyst utilizing hydrated reagents Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mark L. Hlavinka 2021-09-14
11110443 Methods of preparing a catalyst utilizing hydrated reagents Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mark L. Hlavinka 2021-09-07
10894249 Methods of preparing a catalyst utilizing hydrated reagents Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mark L. Hlavinka 2021-01-19
10894250 Methods of preparing a catalyst utilizing hydrated reagents Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mark L. Hlavinka 2021-01-19