Chuck Chang
15Patents
8h-index
5Co-inventors
61Inventor score
Filing activity: Apr 21, 1998 → Aug 19, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6761093B2 | Socket structure | Emerging Cross-Sectional Technologies | 48 | Expired |
| US6644265B2 | Electro-hydraulic manifold assembly and method of making same for controlling de-activation of combustion chamber valves in a multicylinder engine | Emerging Cross-Sectional Technologies | 24 | Expired |
| US7219907B2 | Skateboard wheel set with suspension device | Human Necessities | 22 | Expired |
| US6913272B2 | Skateboard having a three-dimensional independent suspension balance system | Human Necessities | 21 | Expired |
| US6253646A | Roller-type ratchet device for wrench | Performing Operations; Transporting | 21 | Expired |
| US6656053B2 | Automatically restorable universal connector | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6053512A | Suspension system for in-line roller skates | Human Necessities | 12 | Expired |
| US7146881B2 | Wrench having a locking device with a smaller driving angle | Performing Operations; Transporting | 9 | Expired |
| US6722508B2 | Removable cartridge assembly for filtering bi-directional axial flow and radial flow and method of making same | Emerging Cross-Sectional Technologies | 7 | Expired |
| US8677956B2 | Control valve for a device for variably adjusting the control times of gas-exchange valves of an internal combustion engine | Emerging Cross-Sectional Technologies | 2 | Active |
| USD426864S | Base for in-line roller skate | General | 2 | Expired |
| US7117772B2 | Wrench having a safety device | Emerging Cross-Sectional Technologies | 2 | Expired |
| USD680397S1 | Wrench detent having unsymetrical tooth shapes at left and right end | General | 1 | Active |
| US8573167B2 | Control valve for a device for variably adjusting the control times of gas-exchange valves of an internal combustion engine | Emerging Cross-Sectional Technologies | 1 | Active |
| US7344143B2 | Roller skate having a safety device | Human Necessities | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.