Michael James Lehman
14Patents
4h-index
18Co-inventors
57Inventor score
Filing activity: Nov 30, 1993 → Sep 23, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5451188A | Driver-controlled differential lock control system | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US5853348A | Park position locking system for steering column transmission shifter | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US6234586A | Parking brake lock-in key switch system for vehicle air brake system | Performing Operations; Transporting | 15 | Expired |
| US6007159A | Parking brake lock-in key switch system for vehicle air brake system | Performing Operations; Transporting | 10 | Expired |
| US6237712A | Controlled two-speed axle shifting with automatic transmission | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US10328627B2 | Die assembly and method of extruding cellular ceramic substrates with a skin | Performing Operations; Transporting | 1 | Active |
| US9878958B2 | Dimensional control of ceramic structures via composition | Emerging Cross-Sectional Technologies | 1 | Active |
| US6748768B2 | Apparatus and method of doping silica with fluorine during laydown | Chemistry; Metallurgy | 1 | Expired |
| US8491295B2 | Die assembly and method of extruding cellular ceramic substrates with a skin | Performing Operations; Transporting | 0 | Active |
| US12194449B2 | Low bulk density, high geometric surface area honeycomb bodies | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US9233488B2 | Die assembly and method of extruding cellular ceramic substrates with a skin | Performing Operations; Transporting | 0 | Active |
| US12049429B2 | Honeycomb body with a cutout portion and method of manufacturing same | Performing Operations; Transporting | 0 | Active |
| US11505503B2 | Ceramic honeycomb bodies and manufacture | Emerging Cross-Sectional Technologies | 0 | Active |
| US12397469B2 | Honeycomb extrusion dies and methods of using and making same | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.