David A. Chang
5Patents
3h-index
4Co-inventors
46Inventor score
Filing activity: Mar 18, 1996 → Jan 11, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5688435A | Pigmented rheopectic cleaning compositions with thixotropic properties | Chemistry; Metallurgy | 16 | Expired |
| US7462289B2 | Dispenser for a tablet, and methods of use | Emerging Cross-Sectional Technologies | 4 | Expired |
| USD395071S | In-tank toilet dispenser | General | 3 | Expired |
| USD392021S | In-tank toilet dispenser | General | 2 | Expired |
| USD392022S | In-tank toilet dispenser | General | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.