| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 4 | |
| #2 | United Kingdom | 3 | |
| #3 | Germany | 2 | |
| #4 | United States | 2 | |
| #5 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Textiles and paper | |
| #2 | Optics | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Printing machines | |
| #2 | Photomechanical semiconductor production | |
| #3 | Printing plates | |
| #4 | Copy machines | |
| #5 | Vehicle tyre repairing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Dorel Jean | 4 |
| #2 | Jean Dorel | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US1521509A | Composition for use in the reproduction of line documents | |
| GB221508A | Improvements in the manufacture of gelatinous compositions for use in the reproduction of documents and drawings | |
| GB145693A | Improvements in or relating to printing machines | |
| US1380467A | Hand inking-roller for inking cliches | |
| GB139466A | Improvements in inking rollers for gelatine cliches |