| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Paper-making machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wallquist Ivar | 9 |
| #2 | Ivar Wallquist | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ES135998A1 | Papermaking process in long sieve machines. | |
| CA550206A | Rotary drum with continuous filter element | |
| CA350691A | Paper manufacture | |
| CA404047A | Liquid purifying apparatus | |
| CA566888A | Drum and filter cloth strainer |