Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David Spence — 2 Patents in 2018

PCPrecision Combustion: 2 patents #4 of 9Top 45%
Beacon Falls, CT: #1 of 3 inventorsTop 35%
Connecticut: #726 of 3,763 inventorsTop 20%
Overall (2018): #154,934 of 503,207Top 35%
2 Patents 2018

Issued Patents 2018

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10060344 Spark-ignited internal combustion engine modified for multi-fuel operation Subir Roychoudhury, Richard Mastanduno, Bruce Crowder, Curtis Morgan 2018-08-28
10001278 Apparatus and method for operating a gas-fired burner on liquid fuels Subir Roychoudhury, Richard Mastanduno, Bruce Crowder, Francesco Macri, Julian David Prada Bernal 2018-06-19