Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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David B. Knowles — 2 Patents in 2018

Comcast: 2 patents #105 of 628Top 20%
Vandergrift, PA: #2 of 19 inventorsTop 15%
Pennsylvania: #1,077 of 7,336 inventorsTop 15%
Overall (2018): #155,992 of 503,207Top 35%
2 Patents 2018

Issued Patents 2018

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10158090 Organic electroluminescent materials and devices Chun Lin, Peter Borden Mackenzie, Jui-Yi Tsai, Robert W. Walters, Scott Beers +2 more 2018-12-18
9893306 Organic electroluminescent materials and devices Chun Lin, Peter Borden Mackenzie, Jui-Yi Tsai, Robert W. Walters, Scott Beers +2 more 2018-02-13