| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 8 | |
| #2 | United Kingdom | 3 | |
| #3 | United States | 3 |
| # | Industry | |
|---|---|---|
| #1 | Macromolecular chemistry and polymers | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Macromolecular compounds derivatives | |
| #2 | Separation | |
| #3 | Chemical leather treatments |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hoenig Max | 14 |
| #2 | Fuchs Walter Dr | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1080970A | Tanning material and method of making same. | |
| GB191007066A | Improvements in or relating to the Manufacture of Extracts for use in Tanning. | |
| US738905A | Process of extracting tannin. | |
| US727798A | Process of making tanning extracts. | |
| GB190121863A | Improvements in the Manufacture of Tanning Extracts. | |
| GB189618265A | Improved Manufacture of Tannin-extract from Sulphite Cellulose Lyes. |