David A. Chan
15Patents
8h-index
21Co-inventors
72Inventor score
Filing activity: May 16, 1988 → Mar 27, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5376796A | Proximity detector for body contouring system of a medical camera | Physics | 62 | Expired |
| US6939198B1 | Polishing system with in-line and in-situ metrology | Electricity | 39 | Expired |
| US6506097B1 | Optical monitoring in a two-step chemical mechanical polishing process | Electricity | 27 | Expired |
| US5519223A | Apparatus and method for automated collimator exchange | Physics | 14 | Expired |
| US7101251B2 | Polishing system with in-line and in-situ metrology | Electricity | 9 | Expired |
| US6632124B2 | Optical monitoring in a two-step chemical mechanical polishing process | Electricity | 9 | Expired |
| US7294039B2 | Polishing system with in-line and in-situ metrology | Electricity | 9 | Active |
| US4868469A | Multi-way polling, branching and waiting opcode | Physics | 8 | Expired |
| US7008875B2 | Methods and apparatus for polishing control | Performing Operations; Transporting | 7 | Expired |
| US7927182B2 | Polishing system with in-line and in-situ metrology | Electricity | 5 | Active |
| US8687348B2 | Integrated safety disconnects for power systems | Electricity | 4 | Active |
| US7585202B2 | Computer-implemented method for process control in chemical mechanical polishing | Electricity | 3 | Active |
| US7400934B2 | Methods and apparatus for polishing control | Performing Operations; Transporting | 2 | Expired |
| US8460057B2 | Computer-implemented process control in chemical mechanical polishing | Electricity | 1 | Active |
| US9478950B2 | Integrated safety disconnects for power systems | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.