| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 3 | |
| #2 | Switzerland | 2 | |
| #3 | Germany | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | Canada | 1 | |
| #6 | Spain | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Live-saving devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Colas Jacques | 4 |
| #2 | Colas Andre | 3 |
| #3 | Jacques Colas | 2 |
| #4 | Andre Colas | 2 |
| #5 | Colas Louis | 2 |
| #6 | Societe L Alfa | 2 |
| #7 | Louis Colas | 1 |
| #8 | Colas Andre P J | 1 |
| #9 | Colas Louis J B A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB718727A | Improvements in filter cartridges | |
| ES201669A1 | A procedure for the manufacture of filter cartridges (Machine-translation by Google Translate, not legally binding) | |
| DE946884C | Filter body | |
| GB525783A | Improvements in or relating to filters | |
| DE660137C | Filter body, especially for gas oil | |
| CA239922A | Treating black liquor |