Eric F. Drake
16Patents
12h-index
6Co-inventors
71Inventor score
Filing activity: Sep 10, 1980 → Aug 6, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4398952A | Methods of manufacturing gradient composite metallic structures | Emerging Cross-Sectional Technologies | 146 | Expired |
| US6517902B2 | Methods of treating preform elements | Emerging Cross-Sectional Technologies | 122 | Expired |
| US5161898A | Aluminide coated bearing elements for roller cutter drill bits | Emerging Cross-Sectional Technologies | 92 | Expired |
| US4368788A | Metal cutting tools utilizing gradient composites | Performing Operations; Transporting | 61 | Expired |
| US4372404A | Cutting teeth for rolling cutter drill bit | Performing Operations; Transporting | 58 | Expired |
| US5967248A | Rock bit hardmetal overlay and process of manufacture | Performing Operations; Transporting | 49 | Expired |
| US6045750A | Rock bit hardmetal overlay and proces of manufacture | Performing Operations; Transporting | 47 | Expired |
| US5988302A | Hardmetal facing for earth boring drill bit | Emerging Cross-Sectional Technologies | 39 | Expired |
| US5653299A | Hardmetal facing for rolling cutter drill bit | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4969378A | Case hardened roller cutter for a rotary drill bit and method of making | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4887493A | Roller cutter drill bit and method of forming | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4595067A | Rotary drill bit, parts therefor, and method of manufacturing thereof | Performing Operations; Transporting | 16 | Expired |
| US6361739B1 | Fabrication process for high density powder composite hardfacing rod | Performing Operations; Transporting | 8 | Expired |
| US6440358B1 | Fabrication process for powder composite rod | Performing Operations; Transporting | 7 | Expired |
| US8945720B2 | Hard composite with deformable constituent and method of applying to earth-engaging tool | Emerging Cross-Sectional Technologies | 7 | Active |
| US8083011B2 | Matrix turbine sleeve and method for making same | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.