| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 4 | |
| #2 | United Kingdom | 4 | |
| #3 | Austria | 2 | |
| #4 | Spain | 2 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Non-metallic elements | |
| #2 | Chemical or physical processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bruenn Paul De | 7 |
| #2 | Paul De Bruenn | 4 |
| Publication | Filing date | Title |
|---|---|---|
| GB191410997A | Improvements relating to the Manufacture of Base-exchanging Bodies. | |
| GB191319194A | Improvements relating to the Manufacture of Double Silicates. | |
| US1161200A | Manufacture of zeolites. | |
| GB191315090A | Improvements in and relating to the Manufacture of Zeolites. | |
| GB191305783A | A New or Improved Water Softening or Purifying Substance and Process of Obtaining same. |