Roger R. Wills
9Patents
5h-index
17Co-inventors
60Inventor score
Filing activity: Nov 14, 1975 → Nov 8, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4619817A | Hydrothermal method for producing stabilized zirconia | Chemistry; Metallurgy | 32 | Expired |
| US3991148A | Method of forming ceramic products | Chemistry; Metallurgy | 26 | Expired |
| US4043381A | Self-destructive core mold materials for metal alloys | Performing Operations; Transporting | 12 | Expired |
| US5257453A | Process for making exhaust valves | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5328527A | Iron aluminum based engine intake valves and method of making thereof | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4729973A | Process for producing ceramic composites from microcomposite particles having dispersed fibrous microstructures and the product thereof | Chemistry; Metallurgy | 5 | Expired |
| US5425821A | Iron aluminum based engine intake valves and its manufacturing method | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6635128B1 | Work hardened poppet exhaust valve | Emerging Cross-Sectional Technologies | 1 | Expired |
| US6629878B1 | Pretreatment for reducing surface treatments defects | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.