Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
SS

Steven P. Sumner

EDEnergy Conversion Devices: 3 patents #65 of 231Top 30%
Warren, MI: #215 of 910 inventorsTop 25%
Michigan: #27,158 of 86,293 inventorsTop 35%
Overall (All Time): #1,666,491 of 4,157,543Top 45%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4948423 Alloy preparation of hydrogen storage materials Michael A. Fetcenko, Joseph LaRocca 1990-08-14
4915898 Method for the continuous fabrication of comminuted hydrogen storage alloy material negative electrodes Merle Wolff, Mark A. Nuss, Michael A. Fetchenko, Andrea L. Lijoi, Joseph LaRocca +1 more 1990-04-10
4893756 Hydride reactor apparatus for hydrogen comminution of metal hydride hydrogen storage material Michael A. Fetcenko, Thomas Kaatz, Joseph LaRocca 1990-01-16