RH

Richard Lyell Holdren

GP Grant Prideco: 2 patents #6 of 58Top 15%
EI Edison Welding Institute: 1 patents #26 of 75Top 35%
NV National Oilwell Varco: 1 patents #240 of 551Top 45%
📍 Columbus, OH: #837 of 3,880 inventorsTop 25%
🗺 Ohio: #18,857 of 73,341 inventorsTop 30%
Overall (All Time): #1,243,774 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
7741580 Method of welding a pipe/connector joint 2010-06-22
7527301 Pipe/connector weld joint, and methods of welding same 2009-05-05
7510218 Pipe/connector weld joint, and methods of welding same 2009-03-31
7062887 Intersecting structural member and a method for joining same 2006-06-20