| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 | |
| #2 | EPO (European Patent Office) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Textiles and paper | |
| #3 | Machines | |
| #4 | Mechanical elements | |
| #5 | Consumer goods | |
| #6 | Environmental technology | |
| #7 | Thermal processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ferri Johann Walter | 2 |
| #2 | Hasler Juerg | 2 |
| #3 | Steinmetz Werner | 2 |
| #4 | Stolz Kurt | 2 |
| #5 | Nagel Ernst | 1 |
| #6 | Ferri Johann W | 1 |
| #7 | Gruter Johann | 1 |
| #8 | Jacob Doebeli | 1 |
| #9 | Bittner Hans-Joachim | 1 |
| #10 | Briner Emil | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP0489183A1 | Passive explosion protection organ | |
| US4154587A | Gas filter element and method of manufacturing the same | |
| US3490685A | Self-cleaning fan | |
| US3412545A | Pneumatic cleaner for roving frames and the like | |
| US3481116A | Overhead cleaners | |
| US3461888A | Floor cleaning of textile mills | |
| US3040495A | Filtering means | |
| US2944628A | Air conditioning apparatus |