Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6622930 | Freeze protection for hot water systems | Karsten Laing | 2003-09-23 |
| 6227235 | Temperature regulated hot water recirculation system | Birger J. Laing | 2001-05-08 |
| 6059965 | Process and device to sterilize a stream of water | Karsten Laing | 2000-05-09 |
| 5944221 | Instantaneous hot water delivery system with a tank | Karsten Laing | 1999-08-31 |
| 5772791 | Floating solar power plant with asymmetrical concentrators | — | 1998-06-30 |
| 5665174 | Platform for recovering solar energy | Inge Laing | 1997-09-09 |
| 5286305 | Photovoltaic power plant | Inge Laing | 1994-02-15 |