Ching Chen
20Patents
9h-index
15Co-inventors
72Inventor score
Filing activity: Oct 22, 1998 → May 20, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7893376B2 | Key structure with scissors-type connecting member | Emerging Cross-Sectional Technologies | 49 | Active |
| US6435063B1 | Box end wrench | Performing Operations; Transporting | 34 | Expired |
| US6457388B1 | Control member for ratchet wrench | Performing Operations; Transporting | 29 | Expired |
| US7235752B1 | Illuminating membrane switch and illuminating keypad using the same | Electricity | 17 | Active |
| US6516930B2 | Ratchet mechanism for tools | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| USD484014S1 | Wrench handle | General | 12 | Expired |
| US6182538A | Shank structure for a wrench | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7062994B2 | Ratchet wrench | Performing Operations; Transporting | 12 | Expired |
| US6550993B2 | Keyboard structure with latch sections and retaining sections | Electricity | 9 | Expired |
| US6305247A | Ratchet wrench structure | Performing Operations; Transporting | 7 | Expired |
| USD434293S | Wrench | General | 6 | Expired |
| USD417374S | Wrench | General | 5 | Expired |
| USD420264S | Wrench | General | 4 | Expired |
| USD433606S | Wrench | General | 3 | Expired |
| US6924447B2 | Waterproof structure of printed circuit board | Electricity | 2 | Expired |
| US7334935B1 | Light positioning frame for a back light module | Physics | 1 | Active |
| USD418381S | Wrench | General | 1 | Expired |
| US9269964B2 | Composite catalyst for electrode and electrochemical cell using the same | Emerging Cross-Sectional Technologies | 0 | Active |
| US8075644B2 | Catalytic liquid fuel | Emerging Cross-Sectional Technologies | 0 | Active |
| US12132399B2 | DC power supply unit for a tattoo machine and capable of outputting square waves | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.