Jack H. Chang
52Patents
14h-index
12Co-inventors
81Inventor score
Filing activity: Apr 19, 1990 → Mar 6, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5974449A | Apparatus and method for providing multimedia messaging between disparate messaging platforms | Electricity | 217 | Expired |
| US6118864A | System and method for providing communication on a wide area network | Electricity | 104 | Expired |
| US8370874B1 | Subscription and channel management technology | Electricity | 74 | Active |
| US7369648B1 | Apparatus and method for PBX-integrated unified messaging services on a switched backbone | Electricity | 50 | Expired |
| US5068932A | Baby crib with slidably lockable fence member | Emerging Cross-Sectional Technologies | 40 | Expired |
| US5710573A | Scaled video output overlaid onto a computer graphics output | Physics | 32 | Expired |
| US6159132A | Oval-tracked exercise device | Human Necessities | 29 | Expired |
| US8650283B1 | Content delivery technology | Electricity | 20 | Active |
| US8671423B1 | Method for monitoring and controlling viewing preferences of a user | Electricity | 18 | Active |
| US8831409B1 | Storage management technology | Electricity | 18 | Active |
| USD463015S1 | Faucet | General | 17 | Expired |
| USD394047S | Scanner | General | 17 | Expired |
| USD415825S | Faucet | General | 16 | Expired |
| US5154110A | Espresso/cappuccino machine | Human Necessities | 15 | Expired |
| US8745206B1 | Content monitoring and control technology | Electricity | 14 | Active |
| US8478836B1 | Proxy cache technology | Electricity | 13 | Active |
| US9374610B1 | Index channel technology | Electricity | 11 | Active |
| USD410527S | Faucet | General | 9 | Expired |
| US9288249B1 | Content interaction technology | Electricity | 8 | Active |
| US8875172B1 | Content sorting and channel definition technology | Electricity | 7 | Active |
| US8375409B2 | Meta channel based media system control technology | Electricity | 7 | Active |
| US8539057B2 | Website presence | Electricity | 7 | Active |
| US5359719A | Address range setting method and apparatus for a computer expansion card | Physics | 6 | Expired |
| US7177908B1 | System and method for managing multimedia messaging platforms | Electricity | 6 | Expired |
| US9560423B1 | Method for monitoring and controlling viewing preferences of a user | Electricity | 5 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.