Mark Eugene Shepard
24Patents
7h-index
43Co-inventors
69Inventor score
Filing activity: Jul 12, 1982 → Apr 10, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4541530A | Recovery of metallic concentrate from solid waste | Emerging Cross-Sectional Technologies | 38 | Expired |
| US4718559A | Process for recovery of non-ferrous metallic concentrate from solid waste | Emerging Cross-Sectional Technologies | 35 | Expired |
| US5635689A | Acceleration damping of elevator resonant modes and hydraulic elevator pump leakage compensation | Performing Operations; Transporting | 13 | Expired |
| US6401875B1 | Absolute position sensing method and apparatus for synchronous elevator machines by detection stator iron saturation | Electricity | 12 | Expired |
| US8259479B2 | Methods and systems for operating a two-stage power converter | Electricity | 11 | Active |
| US7324360B2 | Power converter methods and apparatus for variable speed high power machines | Electricity | 11 | Expired |
| US5635688A | Start jerk reduction for an elevator | Performing Operations; Transporting | 7 | Expired |
| US5808240A | Low-inductance planar bus arrangement | Electricity | 6 | Expired |
| US8073991B2 | Isolated HART interface with programmable data flow | Physics | 5 | Active |
| US8897010B2 | High performance liquid cooled heatsink for IGBT modules | Electricity | 3 | Active |
| US9184650B2 | Systems, methods, and apparatus for controlling power semiconductor devices | Electricity | 3 | Active |
| US10356228B2 | Systems, methods, and apparatus for controlling power semiconductor devices | Electricity | 3 | Active |
| US8942020B2 | Three-level phase leg for a power converter | Electricity | 2 | Active |
| US8423160B2 | Systems and methods for controlling electronic circuitry with separated controllers | Electricity | 2 | Active |
| US8897014B2 | Mechanical layout for half-bridge power module that is optimized for low inductance | Electricity | 2 | Active |
| US9369035B2 | Power converter and method of operation | Electricity | 1 | Active |
| US9671442B2 | System and method for detecting a grid event | Emerging Cross-Sectional Technologies | 1 | Active |
| US7680034B2 | Redundant control systems and methods | Physics | 1 | Active |
| US9099930B2 | Power converter and method of assembling the same | Emerging Cross-Sectional Technologies | 1 | Active |
| US8981762B2 | Apparatus and method for improved current shunt sensing | Physics | 0 | Active |
| US10236113B2 | System and method for reducing partial discharge in high voltage planar transformers | Emerging Cross-Sectional Technologies | 0 | Active |
| US7984118B2 | Persistent configuration in a multiple processor repairable system | Physics | 0 | Active |
| US9620278B2 | System and method for reducing partial discharge in high voltage planar transformers | Emerging Cross-Sectional Technologies | 0 | Active |
| US9798318B2 | Online frequency response characterization system and method | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.