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USPTO Patent Rankings Data through Sept 30, 2025
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Richard C. Wingerson

PTPurevision Technology: 1 patents #1 of 1Top 100%
Crested Butte, CO: #1 of 2 inventorsTop 50%
Colorado: #746 of 2,977 inventorsTop 30%
Overall (2002): #131,013 of 266,432Top 50%
1 Patents 2002

Issued Patents 2002

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6419788 Method of treating lignocellulosic biomass to produce cellulose 2002-07-16