Nigel P. Smith
35Patents
10h-index
32Co-inventors
75Inventor score
Filing activity: Sep 25, 1986 → Mar 29, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6361311B1 | Low burning candle | Chemistry; Metallurgy | 47 | Expired |
| US6555068B2 | Apparatus incorporating air modifying agents | Human Necessities | 29 | Expired |
| US6368564B1 | Apparatus for incorporating air modifying agents | Human Necessities | 26 | Expired |
| US7473502B1 | Imaging tool calibration artifact and method | Physics | 25 | Active |
| US7474401B2 | Multi-layer alignment and overlay target and measurement method | Physics | 24 | Active |
| US7379184B2 | Overlay measurement target | Electricity | 18 | Expired |
| US4737648A | Apparatus for detecting fibrous particle sizes by detecting scattered light at different angles | Physics | 16 | Expired |
| US7532317B2 | Scatterometry method with characteristic signatures matching | Electricity | 11 | Active |
| US7847939B2 | Overlay measurement target | Electricity | 10 | Active |
| US7477396B2 | Methods and systems for determining overlay error based on target image symmetry | Physics | 10 | Active |
| US7808643B2 | Determining overlay error using an in-chip overlay target | Electricity | 7 | Active |
| US8339605B2 | Multilayer alignment and overlay target and measurement method | Physics | 7 | Active |
| US8107079B2 | Multi layer alignment and overlay target and measurement method | Physics | 6 | Active |
| US6562294B1 | Apparatus and method for disseminating an air modifying agent | Human Necessities | 5 | Expired |
| US7876439B2 | Multi layer alignment and overlay target and measurement method | Physics | 4 | Active |
| US8674744B2 | Electronic device and method for providing a digital signal at a level shifter output | Electricity | 3 | Active |
| US10830709B2 | Interferometer with pixelated phase shift mask | Physics | 3 | Active |
| US9239523B2 | Diffraction based overlay linearity testing | Physics | 2 | Active |
| US7013498B1 | Dispenser | Fixed Constructions | 2 | Expired |
| US8390556B2 | Level shifter for use in LCD display applications | Physics | 2 | Active |
| US10935501B2 | Sub-resolution defect detection | Electricity | 2 | Active |
| US9564105B2 | Programmable level shifter for LCD systems | Physics | 1 | Active |
| US10774891B2 | Electromechanical actuator | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US7619753B2 | Method for measuring dimensions and optical system using the same | Physics | 1 | Active |
| US10107621B2 | Image based overlay measurement with finite gratings | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.