| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Spain | 7 | |
| #2 | Austria | 3 | |
| #3 | United States | 2 | |
| #4 | France | 1 | |
| #5 | United Kingdom | 1 | |
| #6 | Greece | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry |
| # | Technology | |
|---|---|---|
| #1 | Materials for miscellaneous applications |
| # | Name | Total Patents |
|---|---|---|
| #1 | Alfred Wakenhut | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB520125A | Improvements in electric discharge lamps and fluorescent materials for use therein | |
| US2136871A | Luminescent zinc compounds | |
| US2126233A | Luminescent composition and method of making the same |