Robert J. Stoppek
11Patents
5h-index
6Co-inventors
48Inventor score
Filing activity: Oct 26, 1999 → Sep 29, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6431051B1 | Closed cavity hydraulic piston and method of making the same | Performing Operations; Transporting | 8 | Expired |
| US6318242A | Filled hydraulic piston and method of making the same | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6293185A | Piston for a hydrostatic cylinder block | Performing Operations; Transporting | 6 | Expired |
| US6491206B2 | Method of making closed cavity pistons | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US6802244B1 | Hydrostatic cylinder block and method of making the same | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6314864A | Closed cavity piston for hydrostatic units | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US6318241A | Piston for a hydrostatic cylinder block | Performing Operations; Transporting | 4 | Expired |
| US6555777B1 | Method of manufacturing bimetal slippers | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6588321B1 | Closed cavity piston and method of making the same | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US6981321B1 | Hydrostatic cylinder block and method of making the same | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6703577B2 | Method of making closed cavity pistons | Emerging Cross-Sectional Technologies | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.