| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 2 | |
| #2 | Denmark | 2 | |
| #3 | Norway | 2 | |
| #4 | Canada | 1 | |
| #5 | German Democratic Republic | 1 | |
| #6 | EPO (European Patent Office) | 1 | |
| #7 | Finland | 1 | |
| #8 | Greece | 1 | |
| #9 | Hungary | 1 | |
| #10 | Ireland | 1 | |
| #11 | Republic of Korea | 1 | |
| #12 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Surface technology and coating | |
| #3 | Environmental technology | |
| #4 | Machines | |
| #5 | Chemical engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gremm Walter | 7 |
| #2 | Zanke Bruno | 4 |
| #3 | Friedrichs Hans | 4 |
| #4 | Gremm Walter Dipl Chem | 1 |
| #5 | Gremm Walter Dipl-Chem | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE3338258A1 | METHOD FOR TREATING IRON AND ZINC-CONTAINING SALT ACID | |
| DK303883D0 | PROCEDURE FOR PROCESSING Zinc-containing Hydrochloric Acids | |
| IE831028L | Process for removing h2s from gases with simultaneous¹regeneration of gas purification material | |
| DE3223952A1 | METHOD FOR REMOVING SULFUR HYDROGEN FROM GAS WITH SIMULTANEOUS REGENERATION OF THE GAS CLEANING MEASURES |