DD

Donald R. Downing

📍 San Antonio, TX: #1,212 of 5,017 inventorsTop 25%
🗺 Texas: #33,546 of 125,132 inventorsTop 30%
Overall (All Time): #1,152,817 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
10934828 Gas and sand separator 2021-03-02
10316838 Method and apparatus for preventing gas lock/gas interference in a reciprocating downhole pump 2019-06-11
10174752 Anti-gas lock valve for a reciprocating downhole pump 2019-01-08
5139398 Neutralizer valve for a downhole pump 1992-08-18