| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 3 | |
| #2 | Spain | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | Switzerland | 2 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Chemical or physical processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Planchon Francois Jean | 7 |
| #2 | Francois Jean Planchon | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB190805040A | Improvements in Metallic Filaments or Rods for Electric Incandescent Lamps. | |
| GB190804956A | Improvements in the Manufacture of Incandescent Bodies for Electric Lamps | |
| US968407A | Manufacture of filaments for electric lamps. | |
| GB190712139A | Improvements in and relating to the Manufacture of Filaments for Electric Lamps. |