| # | Country | Total Patents | |
|---|---|---|---|
| #1 | German Democratic Republic | 4 | |
| #2 | Hungary | 2 | |
| #3 | Netherlands | 2 | |
| #4 | Yugoslavia (Serbia and Montenegro) | 2 | |
| #5 | Germany | 1 | |
| #6 | France | 1 | |
| #7 | Italy | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Environmental technology | |
| #3 | Materials and metallurgy |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Storage of greenhouse gases | |
| #3 | Treatment of glass |
| # | Name | Total Patents |
|---|---|---|
| #1 | Cueppers Steffen | 6 |
| #2 | Meinel Siegfried | 4 |
| #3 | Wondraczek Werner | 4 |
| #4 | Meinel S | 2 |
| #5 | Wondraczek W | 2 |
| #6 | Wiessner Ralf | 1 |
| #7 | Cueppers Steffen Dipl Ing | 1 |
| #8 | Meinel Siegfried Dipl Ing | 1 |
| #9 | Cueppers S | 1 |
| #10 | Woraczek Werner | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DD294470A5 | Method for producing a powder email for cruel goods | |
| DD267875A3 | Process for final cleaning of fluorous exhaust gases | |
| DD228533A1 | Process for final cleaning of fluorous exhaust gases | |
| DD232030A1 | Process for final cleaning of fluorous exhaust gases | |
| IT1143593B | Waste gas contg. hydrofluoric acid - purified by scrubbing with caustic soda soln. from which sodium fluoride crystals are recovered |