Mark Ulrich
25Patents
9h-index
27Co-inventors
75Inventor score
Filing activity: Jan 31, 1996 → Aug 29, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6229126A | Induction heating system with a flexible coil | Emerging Cross-Sectional Technologies | 53 | Expired |
| US6265701A | Method and apparatus for inductive preheating and welding along a weld path | Performing Operations; Transporting | 39 | Expired |
| US6124581A | Method and apparatus for producing power for an induction heating source | Electricity | 24 | Expired |
| US7015439B1 | Method and system for control of on-site induction heating | Electricity | 18 | Expired |
| US6346690B1 | Induction heating system with a flexible coil | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6316755A | Method and apparatus for producing power for an induction heating system | Electricity | 15 | Expired |
| US6347025B1 | Ground fault protection method and apparatus | Physics | 15 | Expired |
| US8038931B1 | On-site induction heating apparatus | Electricity | 13 | Expired |
| US5809110A | Technique of controlling telephone calls | Electricity | 11 | Expired |
| US6727483B2 | Method and apparatus for delivery of induction heating to a workpiece | Electricity | 8 | Expired |
| US7122770B2 | Apparatus for delivery of induction heating to a workpiece | Electricity | 8 | Expired |
| US9227262B2 | Power source for reducing electromagnetic interference and power consumption | Performing Operations; Transporting | 7 | Active |
| US6683286B2 | Method and apparatus for producing power for induction heating with bus bars comprised of plates | Electricity | 6 | Expired |
| US7452171B2 | Welding stud | Performing Operations; Transporting | 4 | Expired |
| US10722969B2 | Energy conservation system, method, and apparatus for use with welding equipment | Performing Operations; Transporting | 3 | Active |
| US8502106B2 | Welding system and method having power controller with workpiece sensor | Performing Operations; Transporting | 3 | Active |
| US7282661B2 | Apparatus for detecting connection of a welded stud to a stud welding gun | Performing Operations; Transporting | 2 | Expired |
| US7893382B2 | Stud welder | Performing Operations; Transporting | 1 | Active |
| US9318884B2 | Induction heating wire insulation heating and removal | Electricity | 1 | Active |
| US10626890B2 | Hydraulic lock and method for a hydraulic system | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US7714252B2 | System and method for a temperature dependent duty cycle within a welding-type apparatus | Performing Operations; Transporting | 1 | Active |
| US10843287B2 | Power source for reducing electromagnetic interference and power consumption | Performing Operations; Transporting | 0 | Active |
| US9919377B2 | Power source for reducing electromagnetic interference and power consumption | Performing Operations; Transporting | 0 | Active |
| US10443932B2 | Refrigerant vent rectifier and efficiency booster | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11536776B2 | Methods and apparatus for servicing welding equipment | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.