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

Howard E. Mitchell

DIDresser Industries: 2 patents #157 of 787Top 20%
EXExide: 2 patents #7 of 29Top 25%
Duncanville, TX: #25 of 131 inventorsTop 20%
Texas: #33,546 of 125,132 inventorsTop 30%
Overall (All Time): #1,287,732 of 4,157,543Top 35%
4 Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5602457 Photovoltaic solar cell laminated in vehicle windshield Carl J. Anderson 1997-02-11
5558960 Seasonal use lead acid electrical storage battery 1996-09-24
4194578 Raise boring head with retractable gage cutters 1980-03-25
4186809 Steep angle raise bit 1980-02-05