John Day
7Patents
4h-index
15Co-inventors
54Inventor score
Filing activity: Feb 8, 1990 → Aug 20, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5280213A | Electric power cell energized by particle and electromagnetic radiation | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6719950B2 | Miniaturized exhaust gas sensor | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4967112A | Electrical power cell energized by high frequency electromagnetic radiation | Physics | 4 | Expired |
| US6940287B2 | Unheated planar sensor element for determining the concentration of a gas component in a gas mixture | Physics | 4 | Expired |
| US9297791B2 | Gas sensor with thermal shock protection | Physics | 2 | Active |
| US7742168B2 | Measuring a surface characteristic | Physics | 2 | Expired |
| US11456700B1 | Specifying SC and IT cut quartz resonators for optimal temperature compensated oscillator performance | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.