Chi Wah Cheng
51Patents
6h-index
41Co-inventors
72Inventor score
Filing activity: Nov 8, 1996 → May 13, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6386422B1 | Solder reflow oven | Performing Operations; Transporting | 29 | Expired |
| US5897048A | Radial wire bonder and selectable side view inspection system | Electricity | 12 | Expired |
| US6766938B2 | Apparatus and method of placing solder balls onto a substrate | Electricity | 11 | Expired |
| US6276598A | Method and apparatus for ball placement | Electricity | 9 | Expired |
| US8037996B2 | Transfer apparatus for handling electronic components | Electricity | 8 | Active |
| US7258703B2 | Apparatus and method for aligning devices on carriers | Physics | 8 | Expired |
| US7726540B2 | Apparatus and method for arranging devices for processing | Emerging Cross-Sectional Technologies | 6 | Active |
| US7762449B2 | Bond head for heavy wire bonder | Electricity | 6 | Active |
| US7495759B1 | Damage and wear detection for rotary cutting blades | Physics | 5 | Active |
| US8251422B2 | Apparatus for transferring electronic components in stages | Electricity | 5 | Active |
| US6109501A | Radial wire bonder and selectable side view inspection system | Electricity | 4 | Expired |
| US7190446B2 | System for processing electronic devices | Physics | 4 | Expired |
| US8967368B2 | Apparatus for processing electronic devices | Electricity | 4 | Active |
| US6607118B2 | Apparatus and method for ball release | Electricity | 4 | Expired |
| US9218995B2 | Transfer apparatus for transferring electronic devices and changing their orientations | Electricity | 4 | Active |
| US9465383B2 | Apparatus and method of using an imaging device for adjustment of at least one handling device for handling semiconductor components | Emerging Cross-Sectional Technologies | 4 | Active |
| US8167524B2 | Handling system for inspecting and sorting electronic components | Electricity | 3 | Active |
| US9850074B2 | Electronic device separator for a feeding apparatus | Performing Operations; Transporting | 3 | Active |
| US6983872B2 | Substrate alignment method and apparatus | Performing Operations; Transporting | 3 | Expired |
| US8091762B1 | Wedge bonding method incorporating remote pattern recognition system | Electricity | 2 | Active |
| US8742288B2 | Laser apparatus for singulation, and a method of singulation | Performing Operations; Transporting | 2 | Active |
| US9561914B1 | Apparatus and method for transferring electronic devices | Electricity | 2 | Active |
| US10996308B2 | Apparatus and method for authentication of electronic device test stations | Physics | 2 | Active |
| US9508570B2 | Singulation apparatus and method | Electricity | 2 | Active |
| US10056278B2 | Apparatus and method for transferring electronic devices | Electricity | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.