Leen Hellenberg
9Patents
8h-index
13Co-inventors
62Inventor score
Filing activity: Jul 17, 1989 → Jul 12, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5078302A | Paint dispensing apparatus | Performing Operations; Transporting | 150 | Expired |
| US4967938A | Paint dispensing apparatus | Performing Operations; Transporting | 129 | Expired |
| US5119973A | Automated dispensing apparatus | Performing Operations; Transporting | 121 | Expired |
| US5268620A | Mixing apparatus | Emerging Cross-Sectional Technologies | 64 | Expired |
| US7654416B2 | Fluid and hair-dye dispensers | Performing Operations; Transporting | 61 | Active |
| US7185789B2 | Hair dye dispenser | Performing Operations; Transporting | 53 | Active |
| US7121430B2 | Fluid and hair-dye dispensers | Performing Operations; Transporting | 34 | Expired |
| USD500625S1 | Dispenser apparatus | General | 31 | Expired |
| US7597217B2 | Two disc valve pump assembly for a fluid dispenser | Performing Operations; Transporting | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.