Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11391031 | Method of controlling a vacuum waste system and a vacuum waste system | — | 2022-07-19 |
| 10767360 | Toilet arrangement | Kaj Ronnblad | 2020-09-08 |
| 10655317 | Method for controlling a vacuum sewage system for a building or for a marine vessel | Mika Karjalainen | 2020-05-19 |
| RE45688 | Vacuum sewer system | Gunnar Lindroos, Kaj Ronnblad | 2015-09-29 |
| 8944778 | Liquid ring pump and method for operating a liquid ring pump | — | 2015-02-03 |
| 8381324 | Vacuum sewage system | — | 2013-02-26 |
| 7770241 | Vacuum sewer system | Gunnar Lindroos, Kaj Ronnblad | 2010-08-10 |
| 6648002 | Vacuum sewer system | — | 2003-11-18 |