Donald E. Drumm
15Patents
11h-index
21Co-inventors
72Inventor score
Filing activity: Sep 28, 1984 → Nov 8, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5526022A | Sourceless orientation sensor | Physics | 176 | Expired |
| US5363120A | Computer input device using orientation sensor | Physics | 172 | Expired |
| US5068645A | Computer input device using an orientation sensor | Physics | 137 | Expired |
| US5426450A | Hands-free hardware keyboard | Physics | 93 | Expired |
| US5142655A | Computer input device using an orientation sensor | Physics | 58 | Expired |
| US5287119A | Computer input device using an orientation sensor | Physics | 34 | Expired |
| US6819080B2 | Autoilluminating lamp system | Emerging Cross-Sectional Technologies | 32 | Expired |
| US6479965B2 | Autoilluminating rechargeable lamp system | Electricity | 28 | Expired |
| USRE41628E1 | Autoilluminating lamp system | General | 22 | Active |
| US4808980A | Electronic light pointer for a projection monitor | Physics | 17 | Expired |
| US5101081A | Graphics surface assembly with calibrating memory device | Physics | 14 | Expired |
| US4573110A | Control device | Electricity | 2 | Expired |
| US10148155B2 | Method and apparatus for connecting an ultracompact, high-performance motor controller to an ultracompact, high-performance brushless DC motor | Electricity | 2 | Active |
| US11290043B2 | High performance current sensing architecture for brushless motors | Electricity | 0 | Active |
| US12350830B2 | Multi-active-axis, non-exoskeletal rehabilitation device | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.