Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4484924 | Process for producing unhaired, storable hides and skins | Ernst Pfleiderer, Tilman Taeger | 1984-11-27 |
| 4443221 | Tanning method | Max May, Ernst Pfleiderer | 1984-04-17 |
| 4436624 | CRT Method of converting and separating substances contained, dissolved or dissolvable in a carrier liquid | Eberhard Kreuzburg, Dietrich J. Von Der Pahle, Ernst Pfleiderer, Tilman Taeger | 1984-03-13 |
| 4398911 | Tanning method | Max May, Ernst Pfleiderer | 1983-08-16 |
| 4351639 | Process for liming pelts of animal hides and skins | Ernst Pfleiderer | 1982-09-28 |
| 4344762 | Soaking method | Ernst Pfleiderer | 1982-08-17 |
| 4314800 | Method for treating pelts and leather | Ernst Pfleiderer, Werner Siol, Hanns Boessler, Hans Trabitzsch | 1982-02-09 |
| 4314801 | Soaking method | Ernst Pfleiderer | 1982-02-09 |
| 4310328 | Process for liming pelts of animal hides and skins | Ernst Pfleiderer | 1982-01-12 |
| 4294087 | Enzymatic method for hair recovery with concurrent opening of hide structure | Ernst Pfleiderer | 1981-10-13 |
| 4293647 | Method of dissolving collagen-containing tissues | Ernst Pfleiderer | 1981-10-06 |
| 4278432 | Soaking method | Ernst Pfleiderer | 1981-07-14 |
| 4273876 | Enzymatic bating method | Ernst Pfleiderer | 1981-06-16 |
| 4232123 | Method for making water-soluble hydrolyzates of keratinaceous materials | Klaus Braeumer, Zdenek Eckmayer, Alexander Berg, Ernst Pfleiderer | 1980-11-04 |
| 4220723 | Enzymatic treatment of proteinaceous animal waste products | Zdenek Eckmayer, Alexander Berg, Ernst Pfleiderer | 1980-09-02 |
| 4220724 | Method for treating raw materials containing collagen | Alexander Berg, Zdenek Eckmayer, Ernst Pfleiderer | 1980-09-02 |
| 4210721 | Method for dissolving collagen-containing skin tissues | Ernst Pfleiderer | 1980-07-01 |