Charles Chang
57Patents
17h-index
33Co-inventors
84Inventor score
Filing activity: Dec 23, 1985 → Oct 26, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5108048A | Stowage bin and support panel system for convertible aircraft and method of installation | Performing Operations; Transporting | 96 | Expired |
| US5875918A | Hermetically-sealed container and closure construction | Performing Operations; Transporting | 62 | Expired |
| US5220636A | Adjustable air freshener | Emerging Cross-Sectional Technologies | 58 | Expired |
| US5791506A | Sealing container which includes a two-part cap for displaying a cosmetic product | Performing Operations; Transporting | 54 | Expired |
| US5813561A | Sanitary beverage can lid | Emerging Cross-Sectional Technologies | 40 | Expired |
| US7785026B2 | Cosmetic applicator device | Human Necessities | 39 | Active |
| USD450889S | Vertical dial stick case | General | 38 | Expired |
| USD441145S | Vertical dial stick case | General | 36 | Expired |
| US7503331B2 | Cosmetic compact | Human Necessities | 30 | Active |
| US6132126A | Adjustable cosmetic applicator | Human Necessities | 28 | Expired |
| US6029842A | Cosmetic jar with transparent cover and hidden threads | Human Necessities | 24 | Expired |
| US6138687A | Cosmetic jar and applicator | Human Necessities | 23 | Expired |
| US4900529A | Process for making crystalline siliceous materials | Performing Operations; Transporting | 20 | Expired |
| USD457986S1 | Cosmetic container | General | 20 | Expired |
| US6412918B1 | Back-shooting inkjet print head | Performing Operations; Transporting | 20 | Expired |
| US5988917A | Cosmetic stick dispenser | Human Necessities | 20 | Expired |
| US5875791A | Mascara container and applicator | Human Necessities | 19 | Expired |
| US5326102A | Quickly assembled knockdown football table | Human Necessities | 16 | Expired |
| US5934497A | Sanitary beverage can lid | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6543887B2 | Inkjet print head | Performing Operations; Transporting | 16 | Expired |
| US6382773B1 | Method and structure for measuring temperature of heater elements of ink-jet printhead | Performing Operations; Transporting | 16 | Expired |
| US6378978B1 | Chip structure of inkjet printhead and method of estimating working life through detection of defects | Performing Operations; Transporting | 15 | Expired |
| US5669400A | Cosmetic jar and storage device | Human Necessities | 14 | Expired |
| US5709232A | Cosmetic jar and storage device | Human Necessities | 13 | Expired |
| US5884636A | Cosmetic pot with internal hinged tray | Emerging Cross-Sectional Technologies | 12 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.