DS

David R. Sigler

General Motors: 9 patents #24 of 1,893Top 2%
📍 Shelby Charter Township, MI: #2 of 110 inventorsTop 2%
🗺 Michigan: #198 of 9,817 inventorsTop 3%
Overall (2018): #8,807 of 503,207Top 2%
9
Patents 2018

Issued Patents 2018

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
10058949 Resistance spot welding steel and aluminum workpieces using insertable cover Blair E. Carlson, David Yang, Robert T. Szymanski, Anil K. Sachdev 2018-08-28
10052710 Resistance spot welding steel and aluminum workpieces using electrode weld face cover Blair E. Carlson, Michael J. Karagoulis 2018-08-21
10010966 Electrode for resistance spot welding of dissimilar metals David Yang, Blair E. Carlson, James G. Schroth, Michael J. Karagoulis 2018-07-03
9999938 Multi-step direct welding of an aluminum-based workpiece to a steel workpiece Blair E. Carlson, Yelena Myasnikova, Michael J. Karagoulis 2018-06-19
9999939 Resistance spot welding steel and aluminum workpieces with electrode insert Pei-Chung Wang, Blair E. Carlson 2018-06-19
9987705 Resistance spot welding of steel to pre-coated aluminum Blair E. Carlson, Mahmoud H. Abd Elhamid 2018-06-05
9969026 Weld schedule for resistance spot welding of aluminum alloy workpieces Michael J. Karagoulis 2018-05-15
9925617 Electrode for spot welding James G. Schroth, Michael J. Karagoulis 2018-03-27
9908199 Programmable polarity module for DC resistance spot welding Michael J. Karagoulis 2018-03-06