Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Christopher S. Letko — 5 Patents

Dow Global Technologies: 5 patents #957 of 4,534Top 25%
Lake Jackson, TX: #301 of 948 inventorsTop 35%
Texas: #28,318 of 125,132 inventorsTop 25%
Overall (All Time): #899,042 of 4,157,543Top 25%
5 Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
12202928 Isocyanate reactive compositions Weijun Zhou, Thomas P. Willumstad 2025-01-21
12110306 Beta-hydroxyphosphonate functionalized polyols Ravi B. Shankar, Harshad M. Shah, Weijun Zhou 2024-10-08
11225550 Polyurethane product with sulfur-containing polyester polyol Harshad M. Shah, Rajat Duggal, Nathan Wilmot 2022-01-18
11214533 Readily biodegradable alkoxylate mixtures Sung-Yu Ku, Wanglin Yu, Stephen W. King, Michael A. Brammer 2022-01-04
10626293 Acrylic polyurethane coatings including polyether polyols Amber Stephenson, John N. Argyropoulos, John Klier 2020-04-21