Inventor

KARAGOULIS MICHAEL J

US44 patents

⚠️ This page may combine multiple inventors who share the name “KARAGOULIS MICHAEL J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KARAGOULIS MICHAEL J

GM GLOBAL TECH OPERATIONS LLC

Resistance spot welding steel and aluminum workpieces using electrode weld face cover

Resistance spot welding of aluminum to aluminum and steel to steel

Systems, processes and apparatuses for automated handling of non-ferrous metal objects

Mating electrodes for resistance spot welding of aluminum workpieces to steel workpieces

Resistance spot welding of aluminum-to-aluminum, aluminum-to-steel, and steel-to-steel in a specified sequence and using a cover

Weld electrode for attractive weld appearance

Resistive welding electrode and method for spot welding steel and aluminum alloy workpieces with the resistive welding electrode

Electrode for resistance spot welding of dissimilar metals

Resistance spot welding thin gauge steels

Welding electrode with contoured face

Method of resistance spot welding aluminum alloy workpieces

Multi-step direct welding of an aluminum-based workpiece to a steel workpiece

Electrode for resistance spot welding of dissimilar materials

Weld schedule for resistance spot welding of aluminum alloy workpieces

Programmable polarity module for DC resistance spot welding

Welding electrode cutting tool and method of using the same

Welding electrode cutting tool and method of using the same

Multi-stage resistance spot welding method for workpiece stack-up having adjacent steel and aluminum workpieces

High temperature coatings to mitigate weld cracking in resistance welding

Steel workpiece comprising an alloy substrate and a coating, and a method of spot welding the same

Method of joining steel work-pieces having different gauge ratios

Pretreatment of weld flanges to mitigate liquid metal embrittlement cracking in resistance welding of galvanized steels

Method of joining steel having different resistivities

Multi-step direct welding of an aluminum-based workpiece to a steel workpiece

Metallic component and method of reducing liquid metal embrittlement using low aluminum zinc bath

Weld gun cap dresser cutter

Electrode for spot welding

Programmable polarity module for DC resistance spot welding

Mechanical performance of al-steel weld joints

Resistance spot brazing workpiece stack-ups having one or more thin-gauge steel workpieces

Resistance welding electrode

Alternately direct resistance spot welding of Al-to-Al, al-to-steel, and steel-to-steel with welding electrode having oxide-disrupting structural features

Weld face design for spot welding

Power pulse method for controlling resistance weld nugget growth and properties during steel spot welding

SIGLER DAVID R

Welding electrode with contoured face

Electrode for spot welding

Weld electrode for attractive weld appearance

Weld electrode for attractive weld appearance

Welding electrode with contoured face

Forming and re-forming welding electrodes with contoured faces

Cutting tool for forming and re-forming welding electrodes with contoured faces

Weld schedule for resistance spot welding of aluminum alloy workpieces

GM GLOBAL TECH OPERATIONS INC

Method and apparatus for improved cooling of resistance welding cap

WANG PEI-CHUNG

Method for monitoring and maintaining a resistance welding apparatus