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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Charles R. Stack — 4 Patents

Aurora, IL: #264 of 1,049 inventorsTop 30%
Illinois: #21,640 of 84,256 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Charles R. Stack has been granted 4 US patents. The first was granted in 1990 and the most recent in January 2019. Charles R. Stack ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Charles R. Stack in Aurora, IL, US.

Patents per Year

Patents granted per year, 1990 to 2019Bar chart with a peak of 1 patents in 1990.peak 11990: 1 patents19902005: 1 patents20052017: 1 patents20172019: 1 patents2019

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
10179895 Device for fuel and chemical production from biomass-sequestered carbon dioxide and method therefor Prasad S. Kodukula 2019-01-15
9593300 Device for fuel and chemical production from biomass-sequestered carbon dioxide and method therefor Prasad S. Kodukula 2017-03-14
6845336 Water treatment monitoring system Prasad S. Kodukula 2005-01-18
4948509 Anaerobic fermentation process 1990-08-14