Gundula Roth
52Patents
12h-index
17Co-inventors
81Inventor score
Filing activity: Sep 9, 1999 → May 2, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8071988B2 | White light emitting device comprising a plurality of light emitting diodes with different peak emission wavelengths and a wavelength converter | Electricity | 242 | Active |
| US6809347B2 | Light source comprising a light-emitting element | Emerging Cross-Sectional Technologies | 143 | Expired |
| US6943380B2 | Light emitting device having phosphor of alkaline earth metal silicate | Emerging Cross-Sectional Technologies | 115 | Expired |
| US7554129B2 | Light emitting device | Electricity | 53 | Expired |
| US7679101B2 | Light emitting device | Emerging Cross-Sectional Technologies | 36 | Active |
| US7138660B2 | Light emitting device | Emerging Cross-Sectional Technologies | 35 | Expired |
| US7157746B2 | Light emitting device having a divalent-europium-activated alkaline earth metal orthosilicate phosphor | Emerging Cross-Sectional Technologies | 35 | Expired |
| US6085971A | Luminescent meta-borate substances | Electricity | 18 | Expired |
| US7382033B2 | Luminescent body and optical device including the same | Emerging Cross-Sectional Technologies | 18 | Expired |
| US9576939B2 | Light emitting device and lighting system having the same | Emerging Cross-Sectional Technologies | 17 | Active |
| US7187011B2 | Light source with a light-emitting element | Emerging Cross-Sectional Technologies | 13 | Expired |
| US8070984B2 | Luminescent material | Chemistry; Metallurgy | 12 | Active |
| US8070983B2 | Luminescent material | Chemistry; Metallurgy | 12 | Expired |
| US7828993B2 | Phosphor and optical device using same | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6489716B1 | Compact, energy-saving lamp | Electricity | 11 | Expired |
| US8089084B2 | Light emitting device | Electricity | 11 | Active |
| US8581286B2 | Light emitting device having surface-modified silicate luminophores | Emerging Cross-Sectional Technologies | 11 | Active |
| US8066909B2 | Light emitting device | Electricity | 10 | Active |
| US8945421B2 | Surface-modified silicate luminophores | Emerging Cross-Sectional Technologies | 7 | Active |
| US8847254B2 | Light emitting device | Electricity | 6 | Active |
| US8134165B2 | Light emitting device employing non-stoichiometric tetragonal alkaline earth silicate phosphors | Electricity | 6 | Active |
| US9312246B2 | Light emitting device and lighting system having the same | Emerging Cross-Sectional Technologies | 6 | Active |
| US9196785B2 | Light emitting device having surface-modified quantum dot luminophores | Electricity | 5 | Active |
| US7259396B2 | Light source with a light-emitting element | Emerging Cross-Sectional Technologies | 5 | Active |
| US8075802B2 | Luminescent material | Chemistry; Metallurgy | 5 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.