| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 3 | |
| #2 | Canada | 2 | |
| #3 | Denmark | 2 | |
| #4 | United States | 2 | |
| #5 | Germany | 1 | |
| #6 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Textiles and paper | |
| #3 | Machines | |
| #4 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Fiber treatments | |
| #2 | Compounding processes | |
| #3 | Photosensitive materials | |
| #4 | Portable lighting devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Haefeli Theodor | 3 |
| #2 | Theodor Haefeli | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2893866A | Photosensitive material and a process of making same | |
| GB761791A | Improvements in or relating to processes for hydrolysing cellulose acetate films andhydrolysed films so produced | |
| CA563022A | Stabilized diazo photosensitive materials | |
| CA530467A | Process for hydrolysing cellulose acetate films with caustic soda lye |