Michael Ullrich
16Patents
4h-index
15Co-inventors
57Inventor score
Filing activity: May 1, 1991 → Aug 2, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6026777A | Piston having a barrel of forged steel and a cooling channel | Emerging Cross-Sectional Technologies | 39 | Expired |
| US6877473B2 | Diesel engine piston | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5113817A | Piston with specific land characteristics | Emerging Cross-Sectional Technologies | 6 | Expired |
| US8813712B2 | Piston for an internal combustion engine and method for its production | Emerging Cross-Sectional Technologies | 5 | Active |
| US8661965B2 | Piston for an internal combustion engine | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US8671905B2 | Piston for an internal combustion engine and method for its production | Emerging Cross-Sectional Technologies | 3 | Active |
| US9242317B2 | Method for the production of a piston for an internal combustion engine | Emerging Cross-Sectional Technologies | 2 | Active |
| US8550052B2 | Piston for an internal combustion engine | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US6874418B2 | Cutting device for cutting a printing material in the printing unit of a printing device | Performing Operations; Transporting | 1 | Expired |
| US7311075B2 | Split piston for an internal combustion engine | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US9322358B2 | Piston for an internal combustion engine and method for its production | Emerging Cross-Sectional Technologies | 0 | Active |
| US11702357B2 | Nozzle strip for a blow box for thermally prestressing glass panes | Chemistry; Metallurgy | 0 | Active |
| US7003878B2 | Method for producing a ring support with a sheet metal cooling channel welded thereon | Emerging Cross-Sectional Technologies | 0 | Expired |
| US7260340B2 | System and method for transfer of an electrical voltage to/from a rotating roller | Physics | 0 | Expired |
| US9689343B2 | Piston | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11828295B2 | Pressure wall for a fluid pump and a pump including the pressure wall | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.