DS

David R. Sigler

General Motors: 84 patents #59 of 18,328Top 1%
Overall (All Time): #20,652 of 4,157,543Top 1%
84
Patents All Time

Issued Patents All Time

Showing 25 most recent of 84 patents

Patent #TitleCo-InventorsDate
11524358 Mechanical performance of al-steel weld joints Amberlee S. Haselhuhn, Blair E. Carlson, Michael J. Karagoulis 2022-12-13
11471972 Combined stackup apparatus for resistance spot welding Amberlee S. Haselhuhn, Robert T. Szymanski 2022-10-18
11132986 Tailored panel assembly and method of manufacturing the same Anil K. Sachdev, Raja K. Mishra, Jon T. Carter, Tyson W. Brown, Blair E. Carlson +2 more 2021-09-28
11123816 Aluminum alloy to steel welding process James G. Schroth, Blair E. Carlson, Yelena Myasnikova, David Yang 2021-09-21
11084119 Electrode for resistance spot welding of dissimilar materials David Yang, Blair E. Carlson, James G. Schroth, Michael J. Karagoulis 2021-08-10
11065711 High aspect ratio weld face design for dissimilar metal welding Amberlee S. Haselhuhn 2021-07-20
11065710 Resistance spot welding workpiece stack-ups having a steel workpiece and an aluminum workpiece with a steel plate Blair E. Carlson, Charles E. Jensen 2021-07-20
11045894 Weld schedule for resistance spot welding of aluminum alloy workpieces Michael J. Karagoulis 2021-06-29
10981244 Resistance welding electrode Hui Wang, Blair E. Carlson, Amberlee S. Haselhuhn, Michael J. Karagoulis 2021-04-20
10981243 Multi-step direct welding of an aluminum-based workpiece to a steel workpiece Blair E. Carlson, Yelena Myasnikova, Michael J. Karagoulis 2021-04-20
10940557 Programmable polarity module for DC resistance spot welding Michael J. Karagoulis 2021-03-09
10857619 Control of intermetallic compound growth in aluminum to steel resistance welding Tyson W. Brown, Blair E. Carlson, Amberlee S. Haselhuhn 2020-12-08
10857618 Improving mechanical performance of Al-steel weld joints by limiting steel sheet deformation Amberlee S. Haselhuhn, Blair E. Carlson 2020-12-08
10766095 Mating electrodes for resistance spot welding of aluminum workpieces to steel workpieces Hui Wang, Blair E. Carlson, Michael J. Karagoulis 2020-09-08
10751830 Welding electrode for use in a resistance spot welding workpiece stack-ups that include an aluminum workpiece and a steel workpiece David Yang 2020-08-25
10730133 Electrode weld face design Amberlee S. Haselhuhn, Blair E. Carlson 2020-08-04
10682724 Resistance spot welding of aluminum-to-aluminum, aluminum-to-steel, and steel-to-steel in a specified sequence and using a cover Blair E. Carlson, Michael J. Karagoulis 2020-06-16
10682723 Resistance spot welding steel and aluminum workpieces with electrode having insert Blair E. Carlson, James G. Schroth, David Yang, Anil K. Sachdev 2020-06-16
10675703 Al-steel weld joint Blair E. Carlson, Surender Maddela 2020-06-09
10675702 Joining of light metal alloy workpieces to steel workpieces using resistance spot welding and adhesive Blair E. Carlson 2020-06-09
10675704 Alternately direct resistance spot welding of Al-to-Al, al-to-steel, and steel-to-steel with welding electrode having oxide-disrupting structural features Blair E. Carlson, Michael J. Karagoulis 2020-06-09
10625367 Method of resistance spot welding aluminum to steel Blair E. Carlson, Surender Maddela 2020-04-21
10610956 Welding electrode cutting tool and method of using the same Blair E. Carlson, Michael J. Karagoulis, James G. Schroth 2020-04-07
10500679 Resistance welding electrode and method of resistance welding Hui Wang, Blair E. Carlson 2019-12-10
10456856 Welding electrode cutting tool and method of using the same Blair E. Carlson, Michael J. Karagoulis 2019-10-29