Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Don Lee Bertva

CTCooper Technologies: 2 patents #165 of 757Top 25%
Sturgis, MI: #32 of 79 inventorsTop 45%
Michigan: #35,034 of 86,293 inventorsTop 45%
Overall (All Time): #2,274,748 of 4,157,543Top 55%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5701940 Cellular shade James A. Ford, James Murrell Kennedy, Ronald Lynn Presdorf 1997-12-30
5692550 Cellular shade material James A. Ford, James Murrell Kennedy, Ronald Lynn Presdorf 1997-12-02