| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 10 | |
| #2 | United Kingdom | 1 | |
| #3 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Chemical or physical processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Eickemeyer Heinz | 7 |
| #2 | Haintsu Aikemaieru | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2656512A1 | Precoat plate filter esp. for water treatment - has spacers with outer support rims and passages for filtrate through centre | |
| DE1956588A1 | Immersed filter system | |
| GB793286A | Filter element for deposit filters |